STATION: CASPER-NATRONA COUNTY INTERNATIONAL AP (KCPR), WY
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 | 36.1 38.6 48.2 56.6 68.1 79.3 90.4 86.5 74.4 60.0 46.4 35.5 | 60.0
Avg Min Temp | 15.3 17.0 21.7 28.4 37.1 44.7 54.0 51.8 42.1 31.4 22.8 15.1 | 31.8
Avg Temperature | 25.7 27.8 34.9 42.5 52.6 62.0 72.2 69.1 58.3 45.7 34.6 25.3 | 45.9
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Extremes: | |
Extreme Max Temp| 57 61 75 82 95 100 104 101 96 84 72 59 | 104
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Date of Ext-Day | 31 01 31 29 29 30 16 06 04 11 06 01 |
-Year| 2003 2003 2004 2007 2003 2002 2005 2001 1998 1996 1999 1998 |
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Extreme Min Temp| -19 -32 -8 -6 17 31 34 34 24 9 -19 -25 | -32
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Date of Ext-Day | 11 17 02 12 01 06 02 07 26 30 11 20 |
-Year| 1997 2006 2002 1997 2005 1998 1997 1996 1996 2002 2000 1998 |
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Heating Degree Days | 1218 1051 932 675 388 139 7 25 231 599 912 1231 | 7408
Cooling Degree Days | 0 0 0 0 4 48 230 153 29 0 0 0 | 466
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 0.3 5.2 18.7 11.9 2.0 0.0 0.0 0.0 | 38.1
Max Temp >= 75 | 0.0 0.0 0.1 1.6 9.9 21.3 29.9 28.9 17.0 4.0 0.0 0.0 | 112.7
Max Temp <= 32 | 10.9 7.5 4.3 1.5 0.0 0.0 0.0 0.0 0.2 1.0 5.5 12.1 | 42.9
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Min Temp <= 32 | 28.8 26.6 27.7 20.8 8.2 0.3 0.0 0.0 3.1 16.9 23.7 28.7 | 184.9
Min Temp <= 20 | 19.6 16.8 12.5 4.5 0.3 0.0 0.0 0.0 0.0 2.9 11.4 19.5 | 87.5
Min Temp <= 0 | 3.9 2.2 1.3 0.3 0.0 0.0 0.0 0.0 0.0 0.0 1.7 3.8 | 13.2
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Avg Dew Point Temp | 14.6 16.3 20.9 26.1 34.8 39.8 44.4 43.1 36.2 28.4 20.0 14.5 | 28.2
Avg Wet Bulb Temp | 22.3 23.7 29.4 35.5 43.8 50.4 56.5 54.7 46.9 37.6 28.9 21.7 | 37.6
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Avg Sea Level Pres | 30.10 30.08 30.06 30.06 29.98 29.93 29.91 29.93 29.98 30.07 30.11 30.14 | 30.03
(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 0.2 0.6 3.8 5.8 6.5 5.4 2.3 0.2 0.0 0.0 | 24.7
Heavy Fog | 1.2 2.4 2.9 1.5 0.8 0.7 0.3 0.2 0.5 1.9 1.8 1.4 | 15.7
Fog | 9.0 9.5 9.9 9.3 6.7 4.6 2.7 3.2 4.4 7.3 7.3 7.4 | 81.2
Hail | 0.0 0.0 0.0 0.1 0.2 0.2 0.2 0.1 0.0 0.0 0.0 0.0 | 0.8
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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 | 0.34 0.43 0.65 1.15 1.90 1.27 1.76 1.03 1.08 1.16 0.45 0.35 | 11.56
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Maximum Daily | 0.31 0.33 0.50 0.62 2.22 2.12 2.34 2.21 0.75 2.06 0.49 0.29 | 2.34
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Date of Ext-Day | 27 05 28 29 17 16 11 02 17 16 26 24 |
-Year| 2000 2006 2007 1997 2000 2003 2006 2007 2003 1998 2004 2006 |
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Avg Number of Days: | |
>= 0.01 | 5.7 6.4 7.6 9.4 10.0 8.5 7.2 6.2 7.8 7.2 5.6 5.9 | 87.5
>= 0.10 | 1.2 1.4 2.4 4.1 3.8 3.5 3.1 2.5 3.4 3.1 1.8 1.2 | 31.4
>= 0.25 | 0.2 0.4 0.5 1.4 2.3 1.5 1.9 1.2 1.9 1.5 0.3 0.2 | 13.4
>= 0.50 | 0.0 0.0 0.1 0.2 1.1 0.3 1.1 0.5 0.5 0.5 0.0 0.0 | 4.1
>= 1.00 | 0.0 0.0 0.0 0.0 0.2 0.2 0.5 0.2 0.0 0.1 0.0 0.0 | 1.2
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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| 14.8 13.6 12.5 11.4 10.5 10.2 8.9 9.3 9.8 10.9 13.4 15.1 | 11.7
Daily Avg Max 2-Min | 27.6 26.0 25.7 25.3 24.7 26.1 24.8 23.7 22.9 23.7 26.1 28.3 | 25.4
Daily Avg Peak Gust | 32.6 31.0 30.6 31.1 30.7 32.5 31.2 29.6 28.4 28.7 31.2 33.9 | 31.0
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Maximum Daily Avg | 31.5 31.5 27.7 26.0 26.8 27.3 20.4 21.7 21.2 25.1 29.3 31.6 | 31.6
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Maximum 2-Minute Avg| 64 51 49 49 45 54 52 46 44 51 51 53 | 64
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Date of Max 2min-Day| 05 02 16 20 22 02 13 19 16 18 24 25 |
-Year| 2008 1999 1999 2008 2002 2002 2003 2006 2003 2004 1998 2008 |
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Maximum Peak Gust | 78 66 60 63 54 66 81 58 59 61 63 68 | 81
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Date of Max Gust-Day| 05 02 16 30 19 02 27 19 16 23 13 25 |
-Year| 2008 1999 1999 2006 1999 2002 2008 2006 2005 2001 2007 2008 |
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Avg Number of Days: | |
Peak Gust >=30 | 18.6 15.9 16.5 15.0 16.5 16.8 15.8 14.5 11.9 13.9 16.9 20.4 | 192.6
Peak Gust >=40 | 7.9 4.7 5.7 5.0 4.9 5.7 4.8 4.0 3.5 3.3 6.2 9.2 | 64.9
Peak Gust >=50 | 2.2 0.8 1.4 1.5 0.7 1.4 1.5 0.5 0.2 0.9 1.5 2.3 | 14.8
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Max 2-Minute >=30| 13.9 8.9 9.5 7.9 7.7 8.9 7.0 6.2 4.8 5.9 9.4 0.0 | 90.2
Max 2-Minute >=40| 2.5 1.3 2.0 1.2 0.9 1.4 1.4 0.4 0.6 1.2 2.2 0.0 | 15.0
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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.