STATION: LANCASTER-GENERAL WILLIAM J. FOX AIRFIELD AIRPORT
CLIMATOLOGICAL SUMMARY. Period of Record: Jul 1996 to Dec 2008
Summaries based on unedited daily ASOS data. Errors may be present.
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TEMPERATURE (F) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Avg Max Temp | 58.8 60.3 68.4 71.5 83.1 91.1 98.3 98.3 90.5 79.4 67.5 57.5 | 77.0
Avg Min Temp | 30.7 33.9 39.5 44.0 54.5 61.9 67.4 64.3 56.0 45.9 36.7 29.2 | 47.0
Avg Temperature | 44.7 47.1 53.9 57.7 68.8 76.5 82.9 81.3 73.2 62.7 52.1 43.3 | 62.0
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Extremes: | |
Extreme Max Temp| 78 81 91 96 106 107 113 109 107 97 85 76 | 113
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Date of Ext-Day | 31 05 22 28 28 06 05 05 01 03 04 22 |
-Year| 2003 2001 2004 2007 2003 2002 2007 1998 2007 2001 1999 2005 |
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Extreme Min Temp| 3 14 17 27 36 44 51 50 39 27 15 8 | 3
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Date of Ext-Day | 14 06 04 10 02 10 22 16 21 27 30 22 |
-Year| 2007 2003 2002 1999 2008 2002 1999 1999 2004 2006 2004 1998 |
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Heating Degree Days | 629 506 346 239 59 8 0 0 9 120 388 672 | 2975
Cooling Degree Days | 0 0 3 21 176 353 553 506 255 48 0 0 | 1917
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.2 1.3 10.2 18.8 28.2 28.9 18.6 4.7 0.0 0.0 | 110.8
Max Temp >= 75 | 0.1 1.5 9.2 12.3 23.9 28.3 31.0 31.0 27.7 22.0 6.2 0.3 | 193.5
Max Temp <= 32 | 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
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Min Temp <= 32 | 18.3 11.8 5.5 1.1 0.0 0.0 0.0 0.0 0.0 0.4 8.9 20.4 | 66.4
Min Temp <= 20 | 3.3 1.7 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 4.8 | 10.6
Min Temp <= 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 | 0.0
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Avg Dew Point Temp | 26.4 28.7 32.4 34.1 37.3 38.3 44.4 42.1 37.4 32.6 29.8 26.1 | 34.1
Avg Wet Bulb Temp | 36.6 39.1 44.2 46.7 52.6 55.8 60.5 59.4 54.5 48.2 42.1 36.4 | 48.0
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Avg Sea Level Pres | 30.17 30.09 30.04 29.97 29.89 29.85 29.87 29.88 29.89 29.98 30.10 30.16 | 29.99
(Inches of Mercury) | |
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WEATHER | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
See disclaimer below| |
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Avg Number of Days: | |
Thunderstorms | 0.5 0.5 0.5 0.5 0.5 0.0 0.9 0.6 0.3 0.5 0.1 0.2 | 5.1
Heavy Fog | 0.3 0.1 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.1 | 0.9
Fog | 3.7 4.3 3.4 2.0 0.3 0.0 0.0 0.0 0.2 2.1 2.5 2.4 | 20.9
Hail | 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
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PRECIPITATION (In) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Average Monthly | 1.37 2.09 0.48 0.54 0.15 0.02 0.09 0.02 0.15 0.43 0.43 0.84 | 6.59
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Maximum Daily | 1.56 2.67 0.90 1.63 0.49 0.16 0.72 0.14 0.80 1.07 0.99 1.20 | 2.67
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Date of Ext-Day | 10 12 05 17 05 01 12 31 20 17 26 06 |
-Year| 2005 2003 2000 2000 2005 1999 1999 1998 2005 2005 2008 1997 |
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Avg Number of Days: | |
>= 0.01 | 5.9 6.0 3.6 3.1 1.2 0.2 0.6 0.4 0.7 2.1 2.5 4.9 | 31.2
>= 0.10 | 3.0 3.7 1.7 1.4 0.5 0.1 0.2 0.1 0.3 0.9 1.1 1.7 | 14.7
>= 0.25 | 1.9 2.7 0.4 0.5 0.2 0.0 0.1 0.0 0.2 0.5 0.5 0.9 | 8.0
>= 0.50 | 1.0 1.2 0.3 0.2 0.0 0.0 0.1 0.0 0.2 0.4 0.2 0.6 | 4.1
>= 1.00 | 0.3 0.6 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.3 | 1.4
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WIND (MPH) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Daily Avg Wind Speed| 7.5 9.2 11.7 14.1 14.1 14.6 12.7 11.6 9.7 9.1 8.0 8.1 | 10.9
Daily Avg Max 2-Min | 19.3 22.1 25.5 27.7 28.4 27.9 26.0 24.9 23.0 21.8 20.3 19.8 | 23.9
Daily Avg Peak Gust | 22.8 26.1 30.0 33.0 33.8 33.2 31.5 29.9 27.7 25.9 23.8 23.6 | 28.4
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Maximum Daily Avg | 22.3 24.4 26.6 31.4 27.8 26.8 22.6 23.5 24.4 27.8 27.1 24.6 | 31.4
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Maximum 2-Minute Avg| 41 64 48 45 53 48 36 35 39 51 44 53 | 64
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Date of Max 2min-Day| 29 26 27 22 04 12 03 20 17 17 22 21 |
-Year| 2001 2008 2007 2004 2007 2001 2001 2002 2002 2007 2001 2008 |
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Maximum Peak Gust | 48 82 58 52 62 58 52 40 46 59 48 83 | 83
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Date of Max Gust-Day| 29 26 27 15 04 12 03 26 17 17 22 26 |
-Year| 2001 2008 2007 2008 2007 2001 2001 2004 2002 2007 2001 2007 |
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Avg Number of Days: | |
Peak Gust >=30 | 8.2 9.9 16.8 20.6 23.3 23.7 21.9 17.1 12.0 10.2 8.7 9.9 | 182.3
Peak Gust >=40 | 2.0 2.3 3.4 4.7 4.8 3.9 0.8 0.1 0.9 1.4 2.1 2.0 | 28.5
Peak Gust >=50 | 0.0 0.1 0.4 0.1 0.6 0.3 0.1 0.0 0.0 0.3 0.0 0.6 | 2.5
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Max 2-Minute >=30| 4.0 5.9 9.2 12.7 11.8 10.1 4.6 2.8 3.3 4.6 5.0 0.0 | 74.1
Max 2-Minute >=40| 0.3 0.4 0.9 1.3 1.5 0.4 0.0 0.0 0.0 0.6 0.3 0.0 | 5.6
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies. Average days
with Thunderstorms may be low due to early mis-detection.
Heavy Fog = Visibility less than or equal to 1/4 mile.
Fog = Visibility greater than 1/4 mile or less than 7 miles.
Peak Gust = Maximum 5-second average.
Snowfall data not observed at ASOS stations.
Copyright ©2009 Western Regional Climate Center - Desert Research Institute - Reno, Nevada.