STATION: ASPEN-PITKIN COUNTY ARPT (KASE), CO
CLIMATOLOGICAL SUMMARY. Period of Record: May 1998 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 | 32.9 35.7 44.3 54.5 64.4 74.7 82.0 77.6 70.0 58.4 43.8 32.4 | 55.9
Avg Min Temp | 8.5 10.8 19.8 27.7 34.2 40.7 48.1 46.5 38.3 28.9 17.8 8.3 | 27.5
Avg Temperature | 20.7 23.2 32.0 41.1 49.3 57.7 65.1 62.1 54.2 43.6 30.8 20.3 | 41.7
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Extremes: | |
Extreme Max Temp| 62 54 67 72 86 89 92 91 86 76 67 64 | 92
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Date of Ext-Day | 02 01 20 22 31 26 21 14 04 21 07 31 |
-Year| 2006 2003 2004 2006 2002 2002 2005 2003 1998 2003 1999 2005 |
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Extreme Min Temp| -18 -12 -16 1 17 25 37 32 17 10 -15 -21 | -21
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Date of Ext-Day | 15 13 03 01 06 05 04 28 29 17 30 08 |
-Year| 2007 2004 2002 2008 1999 1999 2005 2004 1999 1999 2006 2005 |
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Heating Degree Days | 1373 1180 1022 717 486 224 42 103 327 662 1026 1384 | 8546
Cooling Degree Days | 0 0 0 0 0 5 45 12 1 0 0 0 | 63
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.2 0.0 0.0 0.0 0.0 | 2.2
Max Temp >= 75 | 0.0 0.0 0.0 0.0 4.1 17.8 27.9 23.4 9.4 0.2 0.0 0.0 | 82.7
Max Temp <= 32 | 14.2 9.3 4.0 0.6 0.1 0.0 0.0 0.0 0.0 0.2 5.8 15.6 | 49.8
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Min Temp <= 32 | 30.9 28.2 30.0 24.6 11.9 2.4 0.0 0.1 4.6 22.6 29.4 30.9 | 215.5
Min Temp <= 20 | 27.3 23.7 14.4 3.1 0.7 0.0 0.0 0.0 0.2 3.3 15.9 27.9 | 116.5
Min Temp <= 0 | 7.0 4.0 1.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 5.9 | 19.7
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Avg Dew Point Temp | 11.6 13.0 17.7 21.0 27.4 31.6 41.2 41.7 32.8 24.6 17.4 11.8 | 24.3
Avg Wet Bulb Temp | 17.6 20.0 26.5 32.8 39.4 44.9 51.7 50.6 43.2 34.7 24.9 17.5 | 33.6
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Avg Sea Level Pres | 30.17 30.12 30.07 30.01 29.97 29.91 29.96 29.99 29.98 30.04 30.14 30.17 | 30.04
(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 | 0.0 0.0 0.0 0.6 2.1 3.6 8.0 6.5 3.5 0.5 0.3 0.1 | 25.1
Heavy Fog | 2.3 3.1 2.9 2.1 1.4 0.4 0.0 0.1 0.1 0.9 2.5 1.7 | 17.5
Fog | 13.3 12.8 12.1 9.9 5.4 2.6 4.1 4.5 6.0 6.5 10.1 10.8 | 98.1
Hail | 0.0 0.0 0.0 0.1 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 | 0.3
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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 | 1.08 0.97 1.16 1.48 1.27 0.91 1.76 1.39 1.77 1.37 1.22 0.93 | 15.31
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Maximum Daily | 0.52 0.43 0.55 0.79 1.16 0.82 0.86 0.51 0.85 0.85 0.80 0.72 | 1.16
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Date of Ext-Day | 06 10 14 09 03 14 23 06 18 19 28 01 |
-Year| 2008 2000 2008 2004 2001 1998 2008 2001 2002 2005 2006 2007 |
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Avg Number of Days: | |
>= 0.01 | 10.9 11.4 11.4 11.0 9.4 6.7 12.4 12.7 9.5 9.3 9.5 11.5 | 125.6
>= 0.10 | 3.9 3.4 4.4 5.2 4.0 2.7 6.1 5.2 5.0 4.5 4.5 3.1 | 52.0
>= 0.25 | 1.0 0.8 1.2 1.8 1.4 1.3 2.5 1.6 2.7 1.8 1.3 0.8 | 18.3
>= 0.50 | 0.1 0.0 0.2 0.4 0.6 0.4 0.5 0.1 0.8 0.5 0.4 0.2 | 4.2
>= 1.00 | 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.1
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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| 4.8 5.3 6.0 7.0 7.1 7.2 6.6 6.3 6.5 5.9 4.9 4.7 | 6.0
Daily Avg Max 2-Min | 13.1 14.7 16.8 20.4 20.4 20.4 20.1 19.3 18.6 16.8 13.6 12.8 | 17.2
Daily Avg Peak Gust | 16.4 18.5 21.7 27.0 27.3 27.5 26.2 25.2 24.7 21.8 17.5 16.0 | 22.5
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Maximum Daily Avg | 11.7 12.7 13.2 15.3 15.0 11.4 10.8 10.9 11.9 12.9 13.1 10.7 | 15.3
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Maximum 2-Minute Avg| 28 36 35 44 44 41 36 35 37 32 37 30 | 44
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Date of Max 2min-Day| 15 25 14 28 21 06 14 01 12 11 11 15 |
-Year| 2003 2002 2001 1999 2002 2006 2005 2004 2004 2000 2005 2000 |
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Maximum Peak Gust | 43 47 44 52 62 51 45 44 53 47 45 45 | 62
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Date of Max Gust-Day| 28 25 21 28 21 14 23 01 22 30 11 30 |
-Year| 2008 2002 1999 1999 2002 2006 2005 2004 2007 2003 2005 2007 |
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Avg Number of Days: | |
Peak Gust >=30 | 2.1 2.6 4.7 10.6 10.1 10.2 8.8 7.8 6.4 4.8 2.7 1.6 | 72.3
Peak Gust >=40 | 0.2 0.4 0.3 2.0 1.5 1.6 1.2 0.3 0.7 0.6 0.2 0.2 | 9.2
Peak Gust >=50 | 0.0 0.0 0.0 0.2 0.3 0.1 0.0 0.0 0.1 0.0 0.0 0.0 | 0.7
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Max 2-Minute >=30| 0.0 0.4 0.6 2.5 1.4 1.9 1.6 0.5 1.0 0.7 0.2 0.0 | 10.7
Max 2-Minute >=40| 0.0 0.0 0.0 0.1 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0 | 0.4
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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.