STATION: WOLF POINT-L M CLAYTON AIRPORT (KOLF), MT
CLIMATOLOGICAL SUMMARY. Period of Record: Sep 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 | 25.5 29.5 43.0 58.7 67.6 75.4 87.9 85.5 73.1 57.7 41.9 28.5 | 56.2
Avg Min Temp | 1.2 4.9 17.4 28.5 38.6 48.4 55.5 52.6 40.3 28.8 16.2 4.5 | 28.1
Avg Temperature | 13.4 17.2 30.2 43.6 53.1 61.9 71.7 69.0 56.7 43.2 29.0 16.5 | 42.1
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Extremes: | |
Extreme Max Temp| 61 67 80 88 96 98 111 105 101 89 78 61 | 111
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Date of Ext-Day | 08 22 31 27 18 28 24 14 01 09 12 11 |
-Year| 2002 2002 2004 2001 2006 2002 2007 2003 2004 2004 1999 2004 |
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Extreme Min Temp| -37 -35 -32 0 10 31 40 35 19 -2 -15 -28 | -37
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Date of Ext-Day | 05 03 09 03 03 18 29 19 30 31 12 15 |
-Year| 2005 2004 2002 2002 2005 2004 2004 2004 2003 2003 2000 2008 |
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Heating Degree Days | 1600 1351 1078 642 375 138 14 37 277 675 1079 1503 | 8770
Cooling Degree Days | 0 0 0 0 8 45 221 162 29 1 0 0 | 465
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 0.4 1.8 13.2 10.4 2.6 0.0 0.0 0.0 | 28.5
Max Temp >= 75 | 0.0 0.0 0.6 2.5 9.4 16.3 29.0 26.9 13.4 3.1 0.2 0.0 | 101.6
Max Temp <= 32 | 20.1 15.9 6.9 0.6 0.0 0.0 0.0 0.0 0.0 1.1 8.5 17.1 | 70.1
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Min Temp <= 32 | 31.0 28.2 29.7 20.4 7.8 0.3 0.0 0.0 4.6 21.0 29.2 31.0 | 203.2
Min Temp <= 20 | 28.3 24.8 15.3 5.0 0.4 0.0 0.0 0.0 0.1 4.8 17.1 27.3 | 123.1
Min Temp <= 0 | 13.8 9.2 2.8 0.1 0.0 0.0 0.0 0.0 0.0 0.4 2.7 10.5 | 39.5
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Avg Dew Point Temp | 8.7 11.5 20.6 28.4 37.7 49.1 53.1 48.9 40.0 30.2 20.3 11.0 | 29.9
Avg Wet Bulb Temp | 12.7 15.9 26.7 37.3 46.1 54.9 60.8 57.7 48.0 37.1 25.4 15.1 | 36.5
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Avg Sea Level Pres | 30.16 30.15 30.10 30.03 30.01 29.97 29.92 29.94 30.02 30.07 30.12 30.14 | 30.05
(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 0.1 2.7 6.2 6.2 5.1 1.2 0.3 0.0 0.0 | 21.9
Heavy Fog | 5.2 3.4 2.7 0.9 1.5 0.8 0.6 0.4 0.4 2.7 3.1 3.7 | 25.5
Fog | 17.1 14.0 12.6 8.2 9.0 10.7 5.9 4.1 4.3 8.3 10.3 12.5 | 117.0
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 | 0.17 0.13 0.32 0.80 2.41 3.07 1.63 1.28 0.72 0.85 0.23 0.17 | 11.78
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Maximum Daily | 0.15 0.22 0.65 0.39 1.44 1.60 0.85 2.85 0.91 0.54 0.33 0.18 | 2.85
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Date of Ext-Day | 02 27 28 17 29 08 04 07 22 05 01 28 |
-Year| 2004 2004 2007 2004 2001 2005 2000 2002 2006 2007 2000 2008 |
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Avg Number of Days: | |
>= 0.01 | 4.7 3.4 5.6 7.6 11.3 14.2 9.3 6.9 6.4 7.2 4.0 4.1 | 84.7
>= 0.10 | 0.3 0.3 0.6 3.3 5.8 7.3 4.4 2.9 1.9 2.6 0.6 0.5 | 30.6
>= 0.25 | 0.0 0.0 0.2 1.1 3.0 3.8 2.3 1.4 1.2 1.2 0.2 0.0 | 14.3
>= 0.50 | 0.0 0.0 0.1 0.0 1.3 1.8 1.2 0.5 0.1 0.2 0.0 0.0 | 5.2
>= 1.00 | 0.0 0.0 0.0 0.0 0.5 0.7 0.0 0.1 0.0 0.0 0.0 0.0 | 1.3
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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| 7.0 7.5 9.1 9.8 10.1 8.7 7.9 8.1 7.4 7.6 7.4 7.4 | 8.2
Daily Avg Max 2-Min | 17.0 17.1 20.3 22.3 23.0 21.5 21.3 20.4 19.0 19.0 18.1 17.6 | 19.7
Daily Avg Peak Gust | 20.1 20.3 24.7 28.1 28.8 27.0 27.0 25.9 24.0 23.4 22.1 21.0 | 24.4
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Maximum Daily Avg | 21.8 23.5 24.2 24.2 25.1 22.6 22.4 19.6 20.7 23.0 26.7 23.2 | 26.7
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Maximum 2-Minute Avg| 45 45 49 48 47 66 56 47 41 52 43 45 | 66
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Date of Max 2min-Day| 08 11 10 05 11 08 28 16 01 31 09 27 |
-Year| 2007 2002 2004 2000 2004 2002 2008 2002 2002 1999 2004 2000 |
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Maximum Peak Gust | 56 60 60 60 60 78 68 62 54 67 61 54 | 78
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Date of Max Gust-Day| 08 10 24 05 13 08 28 10 01 31 13 27 |
-Year| 2007 2004 2008 2000 2007 2002 2008 2007 2002 1999 2007 2000 |
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Avg Number of Days: | |
Peak Gust >=30 | 4.1 3.7 8.1 12.5 14.0 10.0 10.6 9.5 7.7 6.8 5.5 5.1 | 97.7
Peak Gust >=40 | 1.0 0.6 2.3 2.9 3.6 2.8 4.0 1.6 1.2 1.7 2.1 1.5 | 25.3
Peak Gust >=50 | 0.2 0.2 0.3 0.5 0.4 0.6 0.7 0.5 0.1 0.2 0.4 0.2 | 4.2
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Max 2-Minute >=30| 2.2 1.1 3.9 4.5 6.1 4.5 4.7 3.1 2.5 2.6 2.6 0.0 | 37.9
Max 2-Minute >=40| 0.2 0.2 0.3 0.6 0.6 0.7 0.9 0.3 0.1 0.2 0.4 0.0 | 4.5
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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.