Operational Climatic Data Summary (OCDS) LOCATION_ID: ICAO_KEDW STATION NAME: EDWARDS AFB, CA LOCATION(DEGREES): N 34.917 W 117.867 ELEVATION: 2310 ft / 704.09 m PREPARED BY: 557 WW / 14 WS UTC TO LST: -8 MEAN POR: 2011/01/01 - 2020/12/31 EXTREME POR: 1941/12/01 - 2022/01/31 DETAILED POR: 1941-2021 YEAR(S): Period of Record (see mean POR >>>) Authoritative climate summary - data quality and quantity sufficient to produce accurate climatological values Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Extreme Max (F) 83 84 90 101 108 113 115 112 111 102 87 84 115 Average Max (F) 60 64 70 77 83 96 100 100 94 82 69 58 80 Daily Average (F) 45 48 55 61 67 79 84 83 76 64 51 43 63 Standard Deviation (F) 11 12 11 12 13 13 12 12 13 13 12 11 19 Average Min (F) 32 35 42 48 53 63 69 68 60 48 37 31 49 Extreme Min (F) 4 14 16 25 32 41 47 47 34 20 13 4 4 Max Diurnal Range (F) 56 50 54 52 52 50 50 49 52 50 49 54 56 Min Diurnal Range (F) 0 0 0 0 0 13 0 4 0 7 0 0 0 Sample Size 8997 8172 8889 8453 8689 8089 8548 8435 7817 7965 8177 8842 101073 Average # Days >= 90 F 0 0 0 2 8 24 30 31 22 5 0 0 120 Average # Days <= 32 F 17 11 3 1 0 0 0 0 0 1 10 18 60 Average # Days <= 0 F 0 0 0 0 0 0 0 0 0 0 0 0 0 Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Monthly Max (In) 5.7 5.8 5.7 1.8 0.9 0.4 1.1 1.8 1.4 2.4 3.4 4.4 15.7 Monthly Average (In) 1.0 1.0 0.8 0.3 0.1 0.0 0.1 0.1 0.2 0.3 0.4 0.7 4.9 Monthly Min (In) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 Daily Max (In) 2.7 2.5 3.4 1.2 0.6 0.4 1.1 0.9 1.3 1.3 1.5 1.6 3.4 Monthly Max Snowfall (In) 11.5 2.6 1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.8 8.6 11.5 Monthly Average Snowfall (In) 0.6 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 1.1 Daily Max Snowfall (In) 6.5 1.8 1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.8 6.3 6.5 Average Snow Depth (In) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 * 0.0 0.0 0.0 0.0 Days with Liquid = Trace 3 2 2 3 4 4 4 4 3 3 1 3 35 Days with Liquid >= 0.01" 3 3 3 1 1 0 1 1 1 1 2 3 19 Days with Liquid >= 0.02" 3 2 3 1 1 0 1 1 1 0 2 2 15 Days with Frozen >= 1.5" 0 0 0 0 0 0 0 0 0 0 0 0 0 Days with Frozen >= 2.5" 0 0 0 0 0 0 0 0 0 0 0 0 0 Days with Frozen >= 3.5" 0 0 0 0 0 0 0 0 0 0 0 0 0 Days with Liquid >= 0.5" 0 0 0 0 0 0 0 0 0 0 0 0 1 Days with Liquid >= 1" 0 0 0 0 0 0 0 0 0 0 0 0 0 Days with Frozen >= 10.5" 0 0 0 0 0 0 0 0 0 0 0 0 0 Days with Frozen >= 15.5" 0 0 0 0 0 0 0 0 0 0 0 0 0 Moisture Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Extreme Max RH (%) 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 Average Max RH (%) 79.3 75.4 76.2 63.5 59.7 46.3 43.9 43.0 49.8 51.8 59.7 71.4 59.9 Average Min RH (%) 28.5 22.2 21.5 16.5 14.5 8.7 9.8 8.9 11.3 13.4 19.7 26.8 16.8 Extreme Min RH (%) 4.0 4.0 4.0 3.0 3.0 1.0 1.0 1.0 3.0 2.0 3.0 3.0 1.0 Extreme Max Dew Point (F) 59 56 59 64 67 70 75 73 72 68 65 58 75 Average Dew Point (F) 29 28 33 33 36 37 42 41 39 30 25 24 33 Std Dev Dew Point (F) 13 11 11 11 9 11 11 11 11 14 14 16 13 Extreme Min Dew Point (F) -32 -13 -13 -10 -13 -16 -8 -17 -5 -23 -26 -26 -32 Dew Point Sample Size 8996 8159 8866 8416 8651 8034 8465 8384 7756 7905 8119 8807 100558 Average Vapor Pressure (In Hg) 0.18 0.17 0.21 0.20 0.22 0.23 0.28 0.27 0.26 0.19 0.16 0.16 0.21 Average Max Abs Humidity (g/m) 12.8 11.5 12.8 14.8 16.3 17.5 21.8 20.1 19.6 17.3 15.6 12.1 21.8 Average Min Abs Humidity (g/m) 0.2 0.6 0.6 0.7 0.6 0.5 0.7 0.5 0.8 0.3 0.2 0.3 0.2 Average Max Spec Humidity (g/m) 11.4 10.2 11.5 13.5 15.1 16.9 20.2 18.8 18.1 16.0 14.1 11.0 20.2 Average Min Spec Humidity (g/m) 0.1 0.5 0.5 0.8 0.5 0.5 0.7 0.5 1.4 0.3 0.2 0.2 0.1 Humidity Sample Size 8994 8151 8864 8411 8650 8034 8459 8384 7755 7904 8114 8803 100523 Wind Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Prevailing Direction $SW SW SW SW SW SW SW SW SW $SW $SW $WSW SW Average Prevailing Speed (kts) 9.9 12.0 12.2 12.8 14.2 13.2 12.4 11.7 11.3 10.5 10.3 10.5 12.0 Extreme Max Speed (kts) 39.0 39.0 42.9 48.0 41.0 37.9 35.0 35.0 33.0 42.9 37.9 43.9 48.0 Extreme Max Gust (kts) 52.1 58.1 64.1 55.9 56.9 51.1 68.0 53.0 52.8 65.1 49.0 50.9 68.0 Average Speed (kts) 6.0 8.2 9.7 11.7 12.4 11.7 10.5 9.7 8.0 7.0 6.6 6.0 8.9 Average Direction 312 87 71 69 62 56 50 50 65 274 287 309 71 Sample Size 8997 8171 8901 8451 8689 8089 8549 8434 7818 7966 8181 8845 101091 Average U-component (kts) 2.7 4.7 6.6 8.5 9.1 8.5 7.4 6.4 4.5 3.5 3.7 2.7 5.6 Std Dev U-component (kts) 6.4 7.6 8.0 8.5 7.8 6.6 6.0 6.2 6.8 7.0 6.8 6.6 7.4 Average V-component (kts) 0.6 1.9 3.1 3.3 5.1 5.8 6.2 5.6 3.3 1.9 1.6 0.4 3.3 Std Dev V-component (kts) 4.9 5.6 5.6 6.2 6.0 5.2 4.5 4.7 5.2 5.1 4.9 5.1 5.6 Average Vector (kts) 2.7 5.1 7.2 9.3 10.5 10.5 9.5 8.4 5.6 4.1 3.9 2.7 6.6 Std Dev Vector (kts) 5.8 6.6 6.8 7.2 7.0 6.2 5.6 5.4 6.0 6.2 6.2 6.2 6.6 Frequency Calm (%) 19.5 12.2 8.6 5.5 4.7 4.2 3.4 4.9 11.3 17.7 18.8 20.8 11.0 Frequency Light & Variable (%) 2.3 3.1 3.3 3.9 3.4 4.3 4.0 4.7 5.2 3.4 2.4 2.4 3.5 Speed 20th Percentile (%) 0.5 1.5 2.1 2.6 3.1 3.1 3.1 2.6 1.5 1.0 0.5 0.0 1.5 Speed 50th Percentile (%) 2.1 3.1 4.6 5.7 6.2 5.7 5.1 4.6 3.6 2.6 2.6 2.1 4.1 Speed 80th Percentile (%) 5.7 7.2 8.2 9.3 9.8 9.3 8.2 7.7 6.7 6.7 6.2 5.7 7.7 Average Days > 25 kts 8.1 12.0 18.6 22.4 25.7 25.6 24.9 22.4 14.3 10.7 9.0 8.9 202.6 Average Days > 19 kts 11.6 16.5 23.2 26.3 28.8 28.7 29.7 29.8 22.2 15.7 12.6 12.3 257.4 Average Days > 24 kts 8.4 12.2 18.9 22.7 26.3 26.3 26.4 23.5 15.3 11.3 9.2 9.1 209.6 Average Days > 34 kts 1.5 3.0 4.1 7.0 4.9 2.6 # 0.9 0.6 1.2 2.2 2.1 30.5 Pressure Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Extreme Max Pressure Altitude (ft) 3228 2867 2848 2710 2792 2638 2589 2589 2694 2694 2762 2841 3228 Average Max Pressure Altitude (ft) 2215 2293 2313 2372 2408 2425 2382 2385 2385 2336 2277 2238 2336 Average Pressure Altitude (ft) 2146 2225 2243 2296 2343 2364 2314 2321 2313 2260 2202 2166 2265 Std Dev Pressure Altitude (ft) 18.0 18.7 14.1 13.1 10.8 8.5 7.9 6.9 9.5 12.8 18.4 18.7 16.1 Average SLP (In Hg) 30.13 30.03 29.99 29.91 29.84 29.78 29.82 29.82 29.85 29.94 30.04 30.10 29.94 Std Dev SLP (In Hg) 0.17 0.17 0.13 0.12 0.10 0.09 0.09 0.08 0.10 0.12 0.17 0.18 0.17 Average Station Pressure (In Hg) 27.67 27.59 27.58 27.52 27.47 27.45 27.50 27.50 27.50 27.56 27.62 27.65 27.55 Std Dev Station Pressure (In Hg) 0.15 0.16 0.12 0.11 0.09 0.07 0.07 0.06 0.08 0.11 0.15 0.16 0.14 Extreme Max ALSTG (In Hg) 30.64 30.65 30.53 30.42 30.34 30.20 30.19 30.22 30.32 30.52 30.58 30.65 30.65 Average ALSTG (In Hg) 30.12 30.03 30.00 29.94 29.88 29.88 29.91 29.91 29.91 29.97 30.03 30.09 29.97 Std Dev ALSTG (In Hg) 1.35 1.40 1.07 0.98 0.82 0.65 0.60 0.52 0.72 0.95 1.37 1.39 1.20 Extreme Min ALSTG (In Hg) 29.01 29.32 29.34 29.46 29.41 29.57 29.66 29.65 29.50 29.50 29.43 29.42 29.01 Density Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Average (kg/m) 1.166 1.154 1.140 1.123 1.108 1.083 1.075 1.076 1.090 1.119 1.149 1.168 1.121 Std Dev (kg/m) 0.027 0.027 0.025 0.027 0.027 0.027 0.024 0.024 0.027 0.029 0.030 0.028 0.043 Extreme Max DA (ft) 4406 4423 4977 5433 5853 6306 6447 6240 6224 5502 4675 4626 6447 Average Max DA (ft) 2861 3202 3579 4111 4554 5315 5571 5568 5157 4383 3451 2753 4213 Average DA (ft) 1785 2133 2582 3097 3550 4331 4606 4583 4101 3209 2283 1726 3146 Std Dev DA (ft) 802 809 748 804 793 818 722 727 824 883 880 833 1307 Weather Occurrence Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Max # Fog Days (FG/BR) 11 7 5 4 2 2 1 2 3 5 6 16 26 Average # Fog Days (FG/BR) 3 1 2 1 # 0 # 0 # # 2 3 13 Year with Max Fog Days (FG/BR) 1993 1998 2018 2020 1980 1998 2015 1977 1976 1974 2011 1984 2010 Max # Fog Days <= 3 mi (FG/BR) 10 6 3 2 1 1 1 1 3 4 3 15 19 Average # Fog Days <= 3 mi (FG/BR) 2 1 1 # # 0 0 0 # # 1 2 7 Year with Max Fog Days <= 3 mi (FG/BR) 1993 1992 1980 1980 1977 1993 2008 1977 1976 1974 1996 1984 1978 Max # Thunderstorm Days 1 3 2 2 6 3 8 9 6 4 2 1 22 Average # Thunderstorm Days 0 0 # # 1 # 1 2 2 # # # 8 Year with Max Thunderstorm Days 1993 1993 2001 1980 1987 1982 1984 2012 1991 2010 1982 1982 1982 Average # Days with Vis Obstruction 4 2 3 1 1 0 1 1 2 # 3 4 21 Average # Blowing Sand or Snow Days 0 1 1 # # 0 0 0 # 0 # # 2 Max # Blowing Sand Days 3 6 8 7 9 3 1 2 2 2 3 2 25 Average # Blowing Sand Days # 2 3 3 2 # 0 # 1 # 1 # 12 Year with Max Blowing Sand Days 2016 2015 2014 2014 1990 1989 2008 1990 2006 2009 2015 2015 2014 Max # Blowing Snow Days 0 0 0 0 0 0 0 1 0 0 0 0 1 Average # Blowing Snow Days 0 0 0 0 0 0 0 0 0 0 0 0 0 Year with Max Blowing Snow Days * * * * * * * 1990 * * * * 1990 Average # Smoke or Haze Days # 1 # # # # 1 1 1 # # # 5 Average # Precip Days 6 6 6 3 3 1 3 2 2 1 3 6 41 Max # Rain Days 15 16 15 10 9 6 14 8 6 7 7 12 67 Average # Rain Days 6 6 6 3 3 1 3 2 2 1 3 6 41 Year with Max Rain Days 1995 2019 1982 1999 2019 2015 1984 1983 1984 1987 1978 2019 1998 Max # Freezing Rain Days 1 0 0 0 0 0 0 0 0 0 0 0 1 Average # Freezing Rain Days # 0 0 0 0 0 0 0 0 0 0 0 # Year with Max Freezing Rain Days 1997 * * * * * * * * * * * 1997 Average Frozen Precip Days # # 0 0 0 0 0 0 0 0 # # 1 Max # Hail Days 0 0 1 0 1 2 1 1 1 2 1 1 4 Average # Hail Days 0 0 0 0 0 0 0 0 0 0 0 # # Year with Max Hail Days * * 1983 * 1988 1982 2003 2005 1987 1987 1982 2020 1982 Max # Snow Days 3 3 5 1 1 0 0 0 0 0 2 3 6 Average # Snow Days # # 0 0 0 0 0 0 0 0 # # 1 Year with Max Snow Days 1979 1979 1991 1982 1988 * * * * * 2019 1987 1982 Sample Size 8999 8173 8931 8463 8702 8090 8560 8436 7821 7968 8182 8848 101173 Cloud Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann Average Cloud Cover (%) 48.0 42.0 49.0 38.0 32.0 20.0 27.0 25.0 25.0 24.0 35.0 43.0 34.0 Median Cloud Cover (%) 50.0 25.0 50.0 25.0 25.0 0.0 25.0 25.0 0.0 0.0 25.0 25.0 25.0 Standard Deviation (%) 41.5 40.0 40.4 38.3 36.2 30.8 34.7 31.6 32.5 33.5 39.1 41.1 38.2 Sample Size 8996 8131 8870 8449 8676 8081 8548 8433 7814 7968 8180 8845 100991 % Frequency of Wind > 25 kts Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 8.3 18.9 24.8 38.2 51.4 49.4 38.5 30.1 20.0 14.2 9.7 7.8 26.5 17-19 LST 1.9 6.1 8.5 21.2 23.5 25.8 18.8 11.5 4.0 3.9 2.2 3.1 10.8 20-22 LST 1.4 3.1 3.2 8.9 7.3 3.5 0.5 0.0 0.5 1.4 3.1 3.2 3.0 23-01 LST 2.4 1.9 2.3 5.4 6.0 2.9 0.1 0.4 0.8 1.0 0.7 3.5 2.3 02-04 LST 2.3 1.8 2.1 6.8 5.4 2.1 0.1 0.2 1.2 0.9 1.7 4.1 2.4 05-07 LST 2.5 5.3 5.2 13.0 15.2 4.6 1.0 0.5 1.7 2.5 2.8 3.6 4.9 08-10 LST 6.4 11.0 13.3 23.5 21.1 11.9 1.7 1.9 4.2 7.7 10.4 6.2 10.1 11-13 LST 9.5 20.5 25.9 32.6 37.8 29.7 14.1 11.5 12.5 12.2 14.9 11.2 19.7 All Hours 4.3 8.7 11.0 19.3 22.0 17.4 10.3 7.9 6.0 5.6 5.8 5.3 10.3 % Frequency of Wind > 19 kts Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 14.3 30.6 44.5 59.8 72.0 73.7 69.5 61.6 40.8 27.3 18.8 15.0 45.1 17-19 LST 7.3 12.6 19.5 37.8 47.7 50.6 47.3 35.6 18.5 9.6 6.0 8.1 24.8 20-22 LST 4.5 7.4 8.9 18.3 17.3 11.3 4.7 1.8 2.8 4.8 5.0 5.4 7.7 23-01 LST 4.7 5.6 8.3 12.5 14.7 8.1 1.8 1.3 2.5 3.1 3.4 6.6 6.1 02-04 LST 4.4 4.7 6.3 13.5 12.0 7.2 2.3 0.9 2.7 4.0 5.3 5.8 5.8 05-07 LST 5.4 9.7 11.9 23.2 27.4 13.8 6.2 2.3 5.2 6.0 7.6 6.5 10.6 08-10 LST 12.2 21.0 26.1 39.0 40.8 30.0 11.9 11.3 13.9 16.6 19.5 13.0 21.5 11-13 LST 17.7 33.6 43.2 52.8 59.6 53.7 40.5 35.0 30.0 25.6 25.2 19.7 37.0 All Hours 8.8 15.8 21.6 33.0 37.8 32.8 24.8 20.5 15.4 12.4 11.6 10.0 20.4 % Frequency of Wind > 24 kts Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 8.5 20.4 27.8 41.3 54.8 53.2 43.2 33.7 22.3 15.8 10.9 8.1 29.0 17-19 LST 2.3 6.6 9.4 23.3 26.5 29.8 24.5 13.8 5.5 4.5 2.5 3.8 12.6 20-22 LST 1.7 3.3 3.9 10.0 8.1 4.3 0.7 0.3 0.9 1.6 3.1 3.5 3.5 23-01 LST 2.9 2.3 2.6 5.6 7.1 3.6 0.2 0.4 1.3 1.7 0.8 4.1 2.7 02-04 LST 2.3 1.9 2.2 7.1 6.1 2.5 0.1 0.2 1.3 1.2 2.1 4.2 2.6 05-07 LST 3.1 5.6 5.7 13.8 16.1 5.2 1.2 0.6 2.0 2.7 3.6 3.8 5.4 08-10 LST 6.8 12.3 14.0 25.0 23.3 13.8 2.3 2.4 5.3 8.2 11.5 7.1 11.2 11-13 LST 10.7 21.9 27.7 33.8 40.4 32.7 15.7 13.8 14.7 14.2 17.1 12.1 21.5 All Hours 4.8 9.4 12.0 20.6 23.9 19.4 12.0 9.1 7.1 6.4 6.6 5.8 11.4 % Frequency of Wind > 34 kts Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.5 1.9 2.1 4.8 3.3 1.6 0.3 0.7 0.4 0.6 1.1 0.8 1.5 17-19 LST 0.2 0.3 1.0 1.7 1.4 0.5 0.0 0.0 0.0 0.4 0.2 0.4 0.5 20-22 LST 0.0 0.6 0.7 0.9 1.1 0.1 0.0 0.0 0.0 0.1 0.1 0.3 0.3 23-01 LST 0.2 0.1 0.4 1.0 0.6 0.0 0.0 0.0 0.0 0.0 0.4 0.2 0.2 02-04 LST 0.1 0.2 0.1 1.1 0.4 0.2 0.0 0.0 0.0 0.0 0.0 0.7 0.2 05-07 LST 0.1 0.3 0.6 1.8 1.2 0.2 0.0 0.0 0.0 0.1 0.1 0.4 0.4 08-10 LST 0.4 0.5 1.8 3.1 2.3 0.6 0.0 0.0 0.0 0.2 0.6 1.7 1.0 11-13 LST 0.6 2.9 4.2 6.1 3.3 1.3 0.1 0.4 0.8 0.3 2.2 1.4 2.0 All Hours 0.3 0.9 1.4 2.7 1.8 0.6 0.1 0.2 0.2 0.2 0.6 0.7 0.8 % Frequency of Fog (FG/BR) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.9 0.6 1.3 0.5 0.1 0.0 0.0 0.0 0.0 0.2 0.7 1.3 0.4 17-19 LST 0.6 0.3 1.0 0.3 0.1 0.0 0.1 0.0 0.0 0.0 0.4 1.7 0.4 20-22 LST 1.3 1.0 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.8 2.8 0.6 23-01 LST 1.6 1.1 1.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 5.6 0.9 02-04 LST 4.5 1.1 1.4 0.0 0.0 0.0 0.0 0.0 0.6 0.0 2.1 7.5 1.5 05-07 LST 7.4 1.4 0.6 0.5 0.3 0.0 0.0 0.0 0.7 0.1 1.7 8.9 1.9 08-10 LST 2.1 2.2 0.9 0.4 0.1 0.0 0.0 0.0 0.0 0.0 1.1 3.8 0.9 11-13 LST 2.1 0.8 0.1 0.7 0.0 0.0 0.0 0.0 0.0 0.2 0.1 1.3 0.4 All Hours 2.6 1.1 0.9 0.3 0.1 0.0 0.0 0.0 0.2 0.1 0.9 4.1 0.9 % Frequency of Thunderstorms Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.0 0.0 0.0 0.9 0.5 2.5 4.9 4.1 0.5 0.5 0.0 1.2 17-19 LST 0.0 0.0 0.6 0.0 0.0 0.0 0.2 0.5 0.3 0.3 0.3 0.0 0.2 20-22 LST 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.0 0.0 0.1 23-01 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.7 0.1 0.1 0.0 0.0 0.1 02-04 LST 0.0 0.0 0.0 0.2 0.0 0.0 0.5 0.2 0.1 0.1 0.0 0.0 0.1 05-07 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 0.0 0.0 0.0 0.1 08-10 LST 0.0 0.0 0.0 0.6 0.2 0.0 0.7 0.2 0.1 0.0 0.0 0.0 0.1 11-13 LST 0.0 0.0 0.0 0.3 0.2 0.7 1.4 2.2 2.6 0.0 0.0 0.3 0.7 All Hours 0.0 0.0 0.1 0.2 0.2 0.2 0.8 1.2 1.2 0.2 0.1 0.0 0.3 % Frequency of Visibility Obstruction Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.9 1.7 2.0 0.6 0.5 0.0 0.7 0.7 1.4 1.1 1.1 1.3 1.0 17-19 LST 0.9 1.3 1.9 0.3 0.1 0.0 0.2 0.4 0.7 0.4 1.2 1.8 0.8 20-22 LST 1.6 1.7 1.7 0.1 0.2 0.0 0.0 0.5 0.1 0.5 3.2 2.8 1.1 23-01 LST 1.7 1.4 1.4 0.1 0.0 0.0 0.5 0.1 0.3 0.9 0.8 5.7 1.1 02-04 LST 4.7 2.2 1.5 0.0 0.0 0.0 0.4 0.1 1.3 0.9 2.5 7.8 1.9 05-07 LST 7.8 1.5 1.1 0.5 0.4 0.0 0.0 0.7 1.6 0.8 1.9 9.0 2.2 08-10 LST 2.4 2.5 1.2 0.7 0.1 0.0 0.1 0.6 1.0 0.0 1.1 4.2 1.2 11-13 LST 2.6 1.8 0.5 1.4 0.1 0.0 0.5 1.2 1.7 0.3 0.8 1.4 1.0 All Hours 2.9 1.8 1.4 0.5 0.2 0.0 0.3 0.6 1.0 0.6 1.6 4.3 1.3 % Frequency of Blowing Sand or Dust Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST # 2.8 2.2 2.3 1.6 # 0.0 # # 0.0 1.2 # 0.9 17-19 LST 0.0 # # 0.6 # 0.0 0.0 0.0 0.0 0.0 # 0.0 # 20-22 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23-01 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 02-04 LST 0.0 0.0 0.0 # 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 05-07 LST 0.0 0.0 0.5 0.8 0.0 0.0 0.0 0.0 0.0 # 0.0 # # 08-10 LST # 0.6 1.1 3.2 # 0.0 0.0 0.0 0.0 # 0.6 0.9 0.6 11-13 LST # 3.7 3.7 4.7 1.9 # 0.0 0.0 # # 1.9 0.5 1.4 All Hours # 0.9 1.0 1.6 0.5 0.0 0.0 0.0 # # 0.5 # # % Frequency of Blowing Snow Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20-22 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23-01 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 02-04 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 05-07 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 08-10 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11-13 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 All Hours 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 % Frequency of Smoke or Haze Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.7 0.2 0.1 0.1 0.3 0.6 0.4 1.1 0.9 0.1 0.0 0.4 17-19 LST 0.2 0.9 1.0 0.0 0.0 0.0 0.1 0.4 0.7 0.4 0.8 0.1 0.4 20-22 LST 0.0 0.7 0.7 0.0 0.2 0.0 0.0 0.5 0.1 0.5 2.4 0.0 0.4 23-01 LST 0.0 0.4 0.2 0.0 0.0 0.0 0.5 0.1 0.3 0.9 0.4 0.0 0.2 02-04 LST 0.2 1.1 0.1 0.0 0.0 0.0 0.4 0.1 0.6 0.9 0.4 0.3 0.3 05-07 LST 0.1 0.0 0.1 0.0 0.2 0.0 0.0 0.7 0.8 0.8 0.2 0.1 0.2 08-10 LST 0.2 0.0 0.2 0.0 0.0 0.0 0.0 0.6 1.0 0.0 0.0 0.0 0.2 11-13 LST 0.0 0.6 0.0 0.0 0.1 0.1 0.4 1.0 1.5 0.0 0.0 0.0 0.3 All Hours 0.1 0.5 0.3 0.0 0.1 0.0 0.3 0.5 0.8 0.6 0.5 0.1 0.3 % Frequency of Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 7.5 5.6 8.8 3.6 3.1 0.8 3.3 3.0 2.9 1.6 4.0 7.0 4.3 17-19 LST 6.9 6.9 6.5 4.1 1.8 0.4 2.7 0.6 0.3 1.4 2.1 6.5 3.4 20-22 LST 5.2 8.2 5.5 2.9 1.0 0.1 0.6 0.6 0.0 1.1 2.1 3.9 2.7 23-01 LST 4.5 6.5 5.4 3.8 1.3 0.0 1.0 1.1 0.1 0.1 3.1 6.8 3.0 02-04 LST 8.6 4.3 5.6 2.1 1.3 0.9 0.9 0.8 0.9 0.2 3.1 6.3 3.1 05-07 LST 8.5 4.0 4.7 2.3 2.6 0.4 1.5 0.7 1.9 0.5 4.9 5.5 3.2 08-10 LST 8.8 6.8 4.0 3.1 1.1 0.1 1.5 0.5 0.7 0.9 3.8 5.2 3.1 11-13 LST 8.4 5.4 4.5 4.1 1.3 1.0 1.8 1.7 2.8 1.0 4.3 5.9 3.5 All Hours 7.3 6.0 5.6 3.3 1.7 0.5 1.7 1.2 1.3 0.9 3.4 5.9 3.3 % Frequency of Rain Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 7.3 5.6 8.8 3.6 3.1 0.8 3.3 3.0 2.9 1.6 3.9 7.0 4.2 17-19 LST 6.2 6.7 6.5 4.1 1.8 0.4 2.7 0.6 0.3 1.4 2.1 6.5 3.4 20-22 LST 4.7 8.1 5.5 2.9 1.0 0.1 0.6 0.6 0.0 1.1 1.4 3.9 2.6 23-01 LST 3.8 6.3 5.4 3.8 1.3 0.0 1.0 1.1 0.1 0.1 3.1 6.8 2.9 02-04 LST 6.0 4.1 5.6 2.1 1.3 0.9 0.9 0.8 0.9 0.2 3.1 6.0 2.8 05-07 LST 8.4 4.0 4.7 2.3 2.6 0.4 1.5 0.7 1.9 0.5 4.9 5.5 3.2 08-10 LST 8.8 6.8 4.0 3.1 1.1 0.1 1.5 0.5 0.7 0.9 3.2 5.2 3.1 11-13 LST 8.4 5.4 4.5 4.1 1.3 1.0 1.8 1.7 2.8 1.0 4.2 5.9 3.4 All Hours 6.7 5.9 5.6 3.3 1.7 0.5 1.7 1.2 1.3 0.9 3.3 5.8 3.2 % Frequency of Freezing Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20-22 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23-01 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 02-04 LST 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 05-07 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 08-10 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11-13 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 All Hours 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 % Frequency of Frozen Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.2 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 17-19 LST 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 20-22 LST 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.0 0.1 23-01 LST 0.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 02-04 LST 2.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 05-07 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 08-10 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.1 0.1 11-13 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 0.0 All Hours 0.5 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.1 0.1 % Frequency of Hail Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20-22 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23-01 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 02-04 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 05-07 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 08-10 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11-13 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 All Hours 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 % Frequency of Snow Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.2 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 17-19 LST 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 20-22 LST 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.0 0.1 23-01 LST 0.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 02-04 LST 2.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 05-07 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 08-10 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.1 0.1 11-13 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.3 0.0 All Hours 0.5 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.1 % Frequency of Snow or Ice Pellets Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.2 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 17-19 LST 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 20-22 LST 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.0 0.1 23-01 LST 0.6 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 02-04 LST 2.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 05-07 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 08-10 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.1 0.1 11-13 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 0.0 All Hours 0.5 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.1 0.1 % Frequency of Ceiling & Visibility < 100 ft / 0.25 mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.1 0.0 0.0 0.0 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 20-22 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 23-01 LST 0.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 02-04 LST 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.0 0.3 0.1 05-07 LST 0.2 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.8 0.1 08-10 LST 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.2 0.1 11-13 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 All Hours 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.2 0.0 % Frequency of Ceiling & Visibility < 200 ft / 0.5 mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.1 0.0 0.0 0.0 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 20-22 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 23-01 LST 0.0 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 02-04 LST 0.0 0.4 0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.1 0.5 0.1 05-07 LST 0.3 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.0 1.2 0.2 08-10 LST 0.2 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.2 0.1 11-13 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 All Hours 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.2 0.0 % Frequency of Ceiling & Visibility < 300 ft / 1 mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.1 0.0 0.0 0.0 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 0.0 20-22 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 23-01 LST 0.1 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 02-04 LST 0.0 0.4 0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.3 0.8 0.1 05-07 LST 0.8 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.3 1.4 0.3 08-10 LST 0.3 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.1 0.3 0.1 11-13 LST 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.3 0.0 0.0 0.0 All Hours 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.3 0.1 % Frequency of Ceiling & Visibility < 500 ft / 1.5 mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.1 0.0 0.0 0.0 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.1 0.0 0.0 20-22 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.1 0.0 0.0 23-01 LST 0.1 0.4 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.1 02-04 LST 0.1 0.4 0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.3 1.0 0.2 05-07 LST 1.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.5 1.4 0.3 08-10 LST 0.4 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.3 0.4 0.2 11-13 LST 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.3 0.0 0.0 0.0 All Hours 0.2 0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.2 0.4 0.1 % Frequency of Ceiling & Visibility < 800 ft / 2 mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.1 0.0 0.0 0.1 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.0 0.0 0.2 0.0 0.0 20-22 LST 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.2 0.0 0.0 23-01 LST 0.1 0.4 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.1 02-04 LST 0.3 0.5 0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.3 1.5 0.3 05-07 LST 1.4 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.5 1.8 0.4 08-10 LST 0.9 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.4 0.9 0.2 11-13 LST 0.0 0.2 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.3 0.1 0.1 0.1 All Hours 0.3 0.3 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.2 0.6 0.1 % Frequency of Ceiling & Visibility < 1000 ft / 2 mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.1 0.1 0.0 0.1 17-19 LST 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.1 0.0 0.2 0.0 0.1 20-22 LST 0.2 0.1 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.2 0.0 0.1 23-01 LST 0.1 0.4 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.1 02-04 LST 0.4 0.5 0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.0 0.3 1.6 0.3 05-07 LST 1.6 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.5 2.0 0.4 08-10 LST 0.9 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.6 1.0 0.3 11-13 LST 0.1 0.2 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.3 0.1 0.2 0.1 All Hours 0.4 0.3 0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.2 0.7 0.2 % Frequency of Ceiling & Visibility < 1500 ft / 3 mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 0.0 0.4 0.1 0.1 0.0 0.0 0.2 0.0 0.5 0.3 0.3 0.5 0.2 17-19 LST 0.0 0.1 0.1 0.1 0.0 0.0 0.0 0.3 0.1 0.2 0.4 1.0 0.2 20-22 LST 0.5 0.1 0.3 0.2 0.0 0.0 0.0 0.1 0.0 0.0 0.2 0.3 0.2 23-01 LST 1.0 0.4 0.2 0.1 0.0 0.0 0.0 0.0 0.1 0.2 0.1 1.3 0.3 02-04 LST 1.0 0.6 0.1 0.0 0.0 0.0 0.0 0.1 0.2 0.2 0.3 2.4 0.4 05-07 LST 2.3 0.4 0.4 0.0 0.0 0.0 0.0 0.0 0.3 0.2 0.5 3.0 0.6 08-10 LST 0.9 0.6 0.4 0.0 0.0 0.0 0.0 0.0 0.3 0.3 0.6 1.5 0.4 11-13 LST 0.3 0.2 0.0 0.3 0.0 0.1 0.0 0.0 0.2 0.3 0.2 0.9 0.2 All Hours 0.7 0.3 0.2 0.1 0.0 0.0 0.0 0.1 0.2 0.2 0.3 1.4 0.3 % Frequency of Ceiling & Visibility < 3000 ft / 3 mi Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann 14-16 LST 1.6 0.7 0.7 0.5 0.0 0.0 0.2 0.0 0.5 0.3 0.6 1.9 0.6 17-19 LST 1.6 0.8 0.4 0.8 0.2 0.0 0.0 0.3 0.1 0.2 0.7 2.4 0.6 20-22 LST 1.8 1.2 0.8 0.6 0.0 0.0 0.0 0.1 0.0 0.0 0.4 2.7 0.6 23-01 LST 2.4 1.0 0.9 0.5 0.1 0.0 0.0 0.0 0.1 0.2 0.6 2.0 0.6 02-04 LST 1.9 1.3 0.6 0.5 0.0 0.0 0.0 0.1 0.2 0.2 0.8 3.6 0.8 05-07 LST 3.5 1.2 1.6 0.2 0.0 0.0 0.0 0.0 0.6 0.2 1.0 4.3 1.1 08-10 LST 1.8 2.0 1.8 0.7 0.2 0.0 0.1 0.0 0.5 0.3 0.8 2.3 0.9 11-13 LST 1.4 0.6 1.1 0.8 0.0 0.1 0.0 0.0 0.2 0.3 1.0 2.2 0.6 All Hours 2.0 1.1 1.0 0.6 0.1 0.0 0.0 0.1 0.3 0.2 0.7 2.7 0.7 LEGEND: * = Data not Available *** = Variable Wind Direction Predominant # = Occurrences rounded to zero $ = Percent of Calm > Prevailing Direction Abs = Absolute ALSTG = Altimeter Setting DA = Density Altitude FG/BR = Fog/Mist LST = Local Standard Time RH = Relative Humidity SLP = Sea Level Pressure Spec = Specific Std Dev = Standard Deviation T = Trace Vis = Visibility