STATION: MOUNT SHASTA (KMHS), CA
CLIMATOLOGICAL SUMMARY. Period of Record: Aug 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
| |
Avg Max Temp | 43.6 46.3 53.2 58.3 68.7 76.7 85.6 84.4 77.7 64.6 50.4 43.2 | 62.7
Avg Min Temp | 27.9 28.8 31.4 34.3 41.3 47.0 51.5 49.6 44.0 37.1 31.7 27.8 | 37.7
Avg Temperature | 35.8 37.5 42.3 46.3 55.0 61.8 68.5 67.0 60.9 50.8 41.0 35.5 | 50.2
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Extremes: | |
Extreme Max Temp| 72 67 77 83 95 96 101 100 97 88 72 60 | 101
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Date of Ext-Day | 18 09 30 26 17 24 10 14 02 08 02 07 |
-Year| 1997 2006 2003 2004 2008 2006 2002 2008 1998 1996 1997 2006 |
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Extreme Min Temp| 7 12 15 18 26 32 37 37 30 22 13 0 | 0
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Date of Ext-Day | 13 19 08 20 04 04 01 05 25 21 29 21 |
-Year| 1997 2006 2002 2008 1999 2001 1997 2002 2005 1996 2006 1998 |
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Heating Degree Days | 906 776 703 561 321 127 20 33 147 440 719 915 | 5668
Cooling Degree Days | 0 0 0 0 10 32 129 96 24 1 0 0 | 293
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 0.6 1.3 7.9 7.3 1.8 0.0 0.0 0.0 | 19.0
Max Temp >= 75 | 0.0 0.0 0.3 2.6 9.9 19.5 29.9 28.5 20.2 6.0 0.0 0.0 | 116.9
Max Temp <= 32 | 1.0 0.3 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.3 | 3.0
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Min Temp <= 32 | 23.5 21.4 18.8 11.4 2.8 0.1 0.0 0.0 0.6 6.3 18.3 24.0 | 127.2
Min Temp <= 20 | 4.2 2.4 1.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 1.4 3.6 | 12.8
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 0.1 | 0.1
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Avg Dew Point Temp | 28.9 29.5 31.1 33.8 40.0 45.3 49.7 46.9 41.3 36.5 33.6 28.8 | 37.1
Avg Wet Bulb Temp | 32.7 33.7 37.1 40.3 47.3 52.9 57.7 55.6 50.2 43.3 37.3 32.5 | 43.4
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Avg Sea Level Pres | 30.20 30.16 30.12 30.07 30.04 30.01 30.01 30.02 30.03 30.12 30.19 30.23 | 30.10
(Inches of Mercury) | |
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WEATHER | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
See disclaimer below| |
| |
Avg Number of Days: | |
Thunderstorms | 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
Heavy Fog | 4.2 3.9 2.5 1.6 0.4 0.2 0.1 0.1 0.1 0.8 2.8 3.7 | 20.3
Fog | 21.1 17.4 13.9 11.0 6.2 4.2 0.8 1.9 1.9 5.9 20.0 20.8 | 125.1
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 | 6.11 7.40 3.99 3.00 1.91 1.23 0.34 0.35 0.48 1.89 5.12 7.87 | 39.69
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Maximum Daily | 2.54 3.88 2.62 1.69 1.57 1.87 1.17 1.28 1.07 3.53 3.39 3.09 | 3.88
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Date of Ext-Day | 04 17 04 12 08 17 05 20 24 19 07 31 |
-Year| 2008 2004 2001 2003 2005 2005 2000 1997 2001 2004 2002 1996 |
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Avg Number of Days: | |
>= 0.01 | 14.1 13.7 11.7 11.4 8.8 4.3 1.8 2.8 2.8 6.3 12.1 13.6 | 103.3
>= 0.10 | 9.2 9.5 6.7 5.8 4.4 2.4 0.5 1.1 1.2 3.6 7.5 9.6 | 61.4
>= 0.25 | 6.9 6.5 4.2 4.1 2.8 1.1 0.4 0.3 0.5 2.0 5.1 6.9 | 40.8
>= 0.50 | 4.5 4.4 2.8 2.2 1.2 0.8 0.3 0.1 0.2 1.2 3.4 5.2 | 26.1
>= 1.00 | 2.0 2.6 1.1 0.6 0.2 0.3 0.1 0.1 0.1 0.4 1.6 2.9 | 11.9
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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| 3.3 3.5 4.0 4.1 3.9 4.1 2.7 2.6 3.0 3.3 3.1 3.5 | 3.4
Daily Avg Max 2-Min | 11.0 11.2 12.0 11.9 11.4 11.5 9.3 9.2 10.1 10.7 10.6 11.5 | 10.9
Daily Avg Peak Gust | 17.8 18.0 19.0 19.1 18.3 18.5 15.3 15.1 16.1 16.9 17.0 18.5 | 17.5
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Maximum Daily Avg | 10.4 12.2 12.4 12.8 12.2 11.9 8.2 8.7 9.7 9.4 11.0 11.6 | 12.8
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Maximum 2-Minute Avg| 22 23 24 23 21 23 17 18 20 21 22 22 | 24
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Date of Max 2min-Day| 04 07 29 02 22 16 26 30 23 08 03 31 |
-Year| 2007 2001 1998 1997 2008 1998 1997 1999 2005 2001 2004 1996 |
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Maximum Peak Gust | 41 38 39 39 40 37 28 29 31 33 35 40 | 41
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Date of Max Gust-Day| 20 13 27 03 21 16 10 30 02 24 03 14 |
-Year| 2007 2008 2007 1999 2008 1998 2008 2008 2004 2006 2004 2002 |
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Avg Number of Days: | |
Peak Gust >=30 | 0.6 1.1 1.0 1.7 0.8 0.7 0.0 0.0 0.4 0.3 0.5 0.9 | 8.2
Peak Gust >=40 | 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 | 0.3
Peak Gust >=50 | 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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Max 2-Minute >=30| 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
Max 2-Minute >=40| 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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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.