STATION: CHALLIS AIRPORT (KLLJ), ID
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 | 29.7 35.6 48.7 57.2 67.2 76.9 88.8 85.4 73.1 59.3 42.0 29.4 | 57.8
Avg Min Temp | 8.6 13.8 23.5 29.7 38.1 44.5 51.6 48.3 39.4 30.1 20.1 10.2 | 29.8
Avg Temperature | 19.2 24.7 36.1 43.5 52.7 60.7 70.2 66.8 56.2 44.7 31.1 19.8 | 43.8
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Extremes: | |
Extreme Max Temp| 61 54 72 81 96 97 103 99 95 81 72 62 | 103
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Date of Ext-Day | 11 28 30 29 28 28 12 01 03 01 07 29 |
-Year| 2000 2008 2004 2007 2003 2007 2002 2000 2007 2001 2006 2005 |
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Extreme Min Temp| -24 -11 -2 11 20 30 36 33 19 -4 -9 -22 | -24
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Date of Ext-Day | 22 08 02 01 08 09 05 31 28 31 01 08 |
-Year| 2008 2001 2002 2008 2002 1999 1999 2006 1999 2002 2002 2005 |
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Heating Degree Days | 1421 1139 895 646 387 160 11 36 271 629 1018 1402 | 8016
Cooling Degree Days | 0 0 0 0 5 30 171 93 8 0 0 0 | 307
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 0.3 2.8 14.8 9.0 0.4 0.0 0.0 0.0 | 27.3
Max Temp >= 75 | 0.0 0.0 0.0 0.6 9.3 19.3 30.1 29.1 14.9 2.2 0.0 0.0 | 105.5
Max Temp <= 32 | 19.6 9.8 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 5.7 19.3 | 55.8
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Min Temp <= 32 | 30.9 28.2 28.3 19.4 7.1 0.6 0.0 0.0 3.6 19.9 27.7 30.7 | 196.5
Min Temp <= 20 | 25.9 20.8 9.3 3.0 0.2 0.0 0.0 0.0 0.1 2.4 14.4 24.6 | 100.7
Min Temp <= 0 | 7.0 2.6 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.7 5.9 | 16.5
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Avg Dew Point Temp | 12.4 15.0 19.4 22.9 28.9 34.6 37.4 35.8 31.3 25.4 20.1 13.2 | 24.7
Avg Wet Bulb Temp | 17.1 21.2 29.6 34.9 41.8 47.7 53.0 50.7 43.9 35.9 26.6 17.8 | 35.0
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Avg Sea Level Pres | 30.24 30.15 30.06 30.00 29.94 29.93 29.89 29.91 29.99 30.07 30.17 30.25 | 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 0.0 0.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 | 0.5
Heavy Fog | 3.9 1.2 0.7 0.1 0.1 0.0 0.0 0.0 0.0 0.5 1.3 2.8 | 10.5
Fog | 14.3 8.2 4.8 3.7 2.8 2.3 0.8 1.2 2.2 2.9 7.3 14.2 | 64.7
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 | 0.37 0.23 0.31 0.52 0.87 0.66 0.32 0.42 0.61 0.56 0.46 0.40 | 5.75
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Maximum Daily | 0.54 0.20 0.50 0.65 0.47 0.48 0.44 0.48 0.88 1.08 0.84 0.36 | 1.08
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Date of Ext-Day | 11 09 27 20 21 26 17 16 06 28 21 01 |
-Year| 2000 1999 2007 2001 2002 2005 2007 2007 2001 2004 2006 2005 |
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Avg Number of Days: | |
>= 0.01 | 6.3 4.5 5.4 7.0 7.8 6.3 4.3 4.8 3.7 4.1 6.5 6.5 | 67.2
>= 0.10 | 1.0 0.7 0.8 1.2 3.4 2.3 1.2 1.2 1.9 1.5 1.7 1.5 | 18.4
>= 0.25 | 0.1 0.0 0.1 0.4 1.2 0.7 0.2 0.5 0.8 0.5 0.1 0.2 | 4.7
>= 0.50 | 0.1 0.0 0.1 0.2 0.0 0.0 0.0 0.0 0.2 0.3 0.1 0.0 | 1.0
>= 1.00 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 | 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| 2.1 2.9 4.9 5.8 6.0 5.8 5.3 4.8 4.0 3.6 2.8 2.4 | 4.2
Daily Avg Max 2-Min | 10.4 11.9 18.1 20.3 21.2 21.4 21.4 20.1 16.9 15.0 12.0 10.7 | 16.6
Daily Avg Peak Gust | 12.5 14.4 23.0 25.8 27.0 27.8 28.1 26.1 21.6 19.0 14.9 13.0 | 21.1
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Maximum Daily Avg | 12.5 11.9 15.0 16.8 13.4 13.9 12.7 12.3 13.7 11.9 12.9 13.0 | 16.8
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Maximum 2-Minute Avg| 35 35 38 46 45 40 43 43 40 36 32 31 | 46
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Date of Max 2min-Day| 01 08 09 27 22 21 19 09 01 29 20 20 |
-Year| 2004 2002 2006 2000 2004 2008 1999 2000 2004 2003 2008 2007 |
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Maximum Peak Gust | 46 40 51 55 53 56 69 58 54 49 45 47 | 69
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Date of Max Gust-Day| 06 08 09 27 30 27 19 19 04 29 19 15 |
-Year| 2007 2002 2006 2000 2003 2002 1999 2007 2005 2003 2003 2006 |
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Avg Number of Days: | |
Peak Gust >=30 | 1.9 1.7 7.3 9.1 10.5 12.6 14.2 11.6 6.6 5.0 2.4 1.6 | 84.6
Peak Gust >=40 | 0.4 0.1 1.3 2.1 2.2 2.9 2.3 2.2 1.3 0.5 0.3 0.2 | 15.8
Peak Gust >=50 | 0.0 0.0 0.1 0.1 0.4 0.2 0.5 0.4 0.3 0.0 0.0 0.0 | 2.0
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Max 2-Minute >=30| 0.4 0.2 2.1 2.5 3.3 3.2 3.0 3.0 1.7 0.9 0.6 0.0 | 21.1
Max 2-Minute >=40| 0.0 0.0 0.0 0.1 0.4 0.1 0.4 0.3 0.1 0.0 0.0 0.0 | 1.4
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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.