STATION: JEROME COUNTY AIRPORT (KJER), ID
CLIMATOLOGICAL SUMMARY. Period of Record: Feb 1997 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 | 33.7 38.2 50.7 58.2 68.6 77.9 89.1 86.4 76.0 62.0 47.8 35.1 | 60.3
Avg Min Temp | 20.6 22.8 29.8 34.7 42.8 49.8 58.0 54.9 46.7 37.4 28.5 21.2 | 37.3
Avg Temperature | 27.2 30.5 40.3 46.4 55.7 63.8 73.5 70.7 61.4 49.7 38.2 28.2 | 48.8
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Extremes: | |
Extreme Max Temp| 59 58 75 86 99 100 105 99 97 89 76 54 | 105
| |
Date of Ext-Day | 31 14 21 27 28 29 12 03 04 01 06 10 |
-Year| 2003 2000 2004 2000 2003 2008 2002 1997 1998 1997 1999 2004 |
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Extreme Min Temp| -5 -2 9 18 25 34 39 32 28 17 8 -5 | -5
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Date of Ext-Day | 05 13 02 21 08 01 05 31 27 30 01 21 |
-Year| 2004 2004 2002 2008 2002 2000 1999 2006 1999 2002 2002 1998 |
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Heating Degree Days | 1173 973 767 557 307 113 7 15 159 476 805 1141 | 6493
Cooling Degree Days | 0 0 0 0 18 78 272 191 50 2 0 0 | 610
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 0.4 3.8 15.9 9.9 1.9 0.0 0.0 0.0 | 31.9
Max Temp >= 75 | 0.0 0.0 0.2 1.8 9.4 19.0 30.4 29.5 17.7 4.0 0.1 0.0 | 112.1
Max Temp <= 32 | 13.9 6.9 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.9 11.7 | 35.3
| |
Min Temp <= 32 | 29.7 25.8 20.4 11.6 2.7 0.0 0.0 0.1 0.9 7.4 20.4 28.1 | 146.9
Min Temp <= 20 | 14.9 10.1 2.1 0.3 0.0 0.0 0.0 0.0 0.0 0.4 5.0 14.3 | 47.1
Min Temp <= 0 | 0.7 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 | 1.1
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Avg Dew Point Temp | 21.4 23.2 26.6 29.8 36.2 41.1 46.7 44.4 37.8 30.3 27.1 22.2 | 32.2
Avg Wet Bulb Temp | 24.8 27.5 34.1 38.8 46.0 51.7 57.9 55.6 48.7 40.2 33.1 25.7 | 40.3
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Avg Sea Level Pres | 30.23 30.15 30.07 29.99 29.95 29.91 29.91 29.93 29.97 30.07 30.16 30.23 | 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 0.0 0.8 1.7 1.9 2.4 1.7 0.9 0.6 0.2 0.0 | 10.2
Heavy Fog | 7.2 4.0 2.6 1.9 0.7 0.2 0.0 0.0 0.3 0.6 3.1 5.4 | 25.9
Fog | 16.5 11.0 7.2 5.7 3.6 2.3 0.3 0.5 2.1 3.6 7.7 13.2 | 73.8
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 | 1.05 0.77 0.91 1.19 1.32 0.41 0.08 0.12 0.30 0.66 0.92 1.45 | 9.19
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Maximum Daily | 0.79 0.42 0.71 0.92 1.06 0.38 0.19 0.23 0.36 0.62 0.94 1.23 | 1.23
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Date of Ext-Day | 20 17 06 20 10 04 04 12 12 05 13 08 |
-Year| 1999 1999 2002 2005 1998 1998 2006 1997 1998 2007 2006 2004 |
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Avg Number of Days: | |
>= 0.01 | 10.4 9.0 8.4 8.5 7.0 4.3 1.2 1.8 3.3 5.3 7.7 10.7 | 77.6
>= 0.10 | 3.7 2.7 2.9 3.9 3.6 1.5 0.3 0.4 1.4 2.0 2.9 4.3 | 29.6
>= 0.25 | 1.0 0.6 1.1 1.4 1.8 0.4 0.0 0.0 0.1 0.9 1.1 2.0 | 10.5
>= 0.50 | 0.2 0.0 0.2 0.4 0.8 0.0 0.0 0.0 0.0 0.1 0.4 0.3 | 2.4
>= 1.00 | 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 | 0.2
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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| 11.4 12.2 11.3 10.9 10.3 9.7 7.4 7.3 8.1 9.3 10.0 10.5 | 9.9
Daily Avg Max 2-Min | 21.9 22.7 22.8 23.1 22.4 21.1 17.0 17.1 17.5 19.4 20.2 20.7 | 20.5
Daily Avg Peak Gust | 25.8 26.6 27.4 28.1 27.3 26.1 21.6 21.5 22.3 23.6 24.2 24.7 | 24.9
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Maximum Daily Avg | 27.9 26.6 21.9 29.7 26.4 26.7 13.3 15.8 18.9 20.5 27.1 25.2 | 29.7
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Maximum 2-Minute Avg| 48 45 48 49 46 46 45 44 39 38 48 43 | 49
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Date of Max 2min-Day| 01 14 25 09 20 13 30 04 05 30 23 13 |
-Year| 2004 2000 2006 1999 2008 2006 1998 2006 2001 1997 2006 1999 |
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Maximum Peak Gust | 67 58 54 59 59 62 74 53 47 47 62 54 | 74
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Date of Max Gust-Day| 30 14 25 09 20 26 07 04 06 23 23 13 |
-Year| 2004 2000 2006 1999 2008 2002 2007 2006 2006 2001 2006 1999 |
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Avg Number of Days: | |
Peak Gust >=30 | 9.4 9.7 11.1 11.8 11.0 8.9 4.0 4.3 5.6 7.4 6.4 9.6 | 99.3
Peak Gust >=40 | 1.9 1.8 2.8 3.5 3.0 2.2 0.9 1.0 1.2 1.5 1.2 1.9 | 22.9
Peak Gust >=50 | 0.2 0.2 0.1 0.5 0.1 0.3 0.3 0.2 0.0 0.0 0.3 0.1 | 2.2
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Max 2-Minute >=30| 4.1 3.9 5.0 5.6 5.0 4.0 1.1 0.9 1.5 3.3 2.5 0.0 | 36.9
Max 2-Minute >=40| 0.3 0.4 0.3 0.8 0.3 0.3 0.2 0.1 0.0 0.0 0.3 0.0 | 3.0
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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.