STATION: ELLENSBURG BOWERS FIELD AIRPORT (KELN), WA
CLIMATOLOGICAL SUMMARY. Period of Record: Aug 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 | 35.4 43.5 53.3 60.7 69.0 76.2 86.1 85.0 76.7 61.7 45.8 35.3 | 60.7
Avg Min Temp | 23.3 25.5 30.4 34.6 42.9 49.5 55.9 54.3 45.4 35.4 27.7 22.8 | 37.3
Avg Temperature | 29.4 34.5 41.9 47.6 55.9 62.9 71.0 69.7 61.0 48.6 36.7 29.0 | 49.0
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Extremes: | |
Extreme Max Temp| 55 64 75 84 99 106 107 106 99 86 67 57 | 107
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Date of Ext-Day | 30 28 11 26 17 30 05 17 04 01 03 02 |
-Year| 2005 2008 2005 2005 2006 2008 2007 2008 2006 2008 2007 2008 |
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Extreme Min Temp| -14 5 6 18 25 34 39 36 26 8 4 -6 | -14
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Date of Ext-Day | 04 18 08 03 10 06 05 28 23 30 30 19 |
-Year| 2004 2006 2002 2007 1999 1999 1999 2000 2000 2002 2006 2008 |
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Heating Degree Days | 1105 862 717 521 295 123 21 24 153 510 848 1115 | 6294
Cooling Degree Days | 0 0 0 0 14 59 206 169 33 0 0 0 | 481
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 1.1 3.8 12.2 10.3 2.7 0.0 0.0 0.0 | 30.0
Max Temp >= 75 | 0.0 0.0 0.1 2.0 7.8 15.4 27.8 26.8 17.5 2.1 0.0 0.0 | 99.5
Max Temp <= 32 | 9.0 1.8 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.7 10.4 | 22.9
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Min Temp <= 32 | 27.9 23.9 19.6 11.2 2.7 0.0 0.0 0.0 1.0 11.8 21.5 27.3 | 146.9
Min Temp <= 20 | 8.8 6.6 1.3 0.4 0.0 0.0 0.0 0.0 0.0 1.1 5.5 10.8 | 34.5
Min Temp <= 0 | 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.7 | 1.2
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Avg Dew Point Temp | 24.9 26.4 29.8 32.5 38.7 43.7 47.3 47.6 42.0 36.1 30.1 24.6 | 35.3
Avg Wet Bulb Temp | 28.0 31.1 36.6 40.9 47.4 52.4 57.5 57.0 50.9 42.4 33.9 27.7 | 42.1
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Avg Sea Level Pres | 30.16 30.13 30.07 30.00 30.00 29.96 29.94 29.94 29.98 30.08 30.16 30.18 | 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 0.1 0.5 1.4 1.0 0.8 0.7 0.4 0.0 0.0 0.0 | 4.9
Heavy Fog | 12.6 6.0 2.0 0.3 0.1 0.0 0.0 0.0 0.1 1.3 5.3 9.5 | 37.2
Fog | 20.9 12.7 7.0 3.4 2.1 1.0 0.3 0.9 0.9 4.8 14.8 19.8 | 88.6
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 | 1.28 0.78 0.53 0.60 0.75 0.36 0.11 0.22 0.25 0.48 1.20 1.54 | 8.10
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Maximum Daily | 0.50 0.65 0.55 0.41 1.34 0.38 0.31 0.53 0.53 0.49 0.72 1.03 | 1.34
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Date of Ext-Day | 22 25 25 28 09 08 19 06 03 03 28 14 |
-Year| 2003 2004 2004 2001 2005 2001 2004 2004 2000 2008 2001 2006 |
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Avg Number of Days: | |
>= 0.01 | 12.7 9.3 8.3 7.2 7.4 4.6 1.7 2.2 2.1 6.8 11.2 13.7 | 87.2
>= 0.10 | 4.4 2.5 1.7 1.8 2.5 1.6 0.4 0.7 0.6 1.4 3.9 4.6 | 26.2
>= 0.25 | 1.7 0.5 0.3 0.7 0.6 0.4 0.1 0.3 0.4 0.6 1.4 2.0 | 8.9
>= 0.50 | 0.1 0.1 0.1 0.0 0.2 0.0 0.0 0.1 0.2 0.0 0.4 0.3 | 1.4
>= 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| 4.2 5.5 9.4 11.0 12.6 14.1 14.4 12.6 10.0 7.6 4.8 4.2 | 9.2
Daily Avg Max 2-Min | 13.3 16.1 22.8 24.7 26.1 26.9 27.5 25.3 22.3 19.6 14.9 13.5 | 21.1
Daily Avg Peak Gust | 15.7 18.7 26.9 29.3 31.1 32.0 32.9 30.5 26.6 23.5 17.5 16.2 | 25.1
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Maximum Daily Avg | 27.2 27.7 24.9 27.2 29.1 30.1 29.0 28.9 27.2 22.8 17.7 21.0 | 30.1
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Maximum 2-Minute Avg| 46 46 44 51 44 44 43 41 40 45 47 62 | 62
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Date of Max 2min-Day| 12 21 09 27 19 11 22 18 05 16 19 08 |
-Year| 2005 2006 2004 2004 2001 2008 2000 2001 2001 2001 2003 2008 |
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Maximum Peak Gust | 54 52 51 56 52 52 53 51 48 61 60 84 | 84
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Date of Max Gust-Day| 07 21 09 27 28 11 22 18 16 25 19 28 |
-Year| 2007 2006 2004 2004 2001 2008 2000 2001 2007 2008 2003 2007 |
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Avg Number of Days: | |
Peak Gust >=30 | 4.0 5.7 13.2 14.4 18.3 19.4 21.2 18.5 12.3 10.7 5.0 4.0 | 146.7
Peak Gust >=40 | 1.3 1.3 3.2 4.0 5.8 6.4 6.5 3.9 3.1 2.2 0.9 1.5 | 40.2
Peak Gust >=50 | 0.2 0.2 0.2 0.4 0.4 0.2 0.1 0.1 0.0 0.5 0.2 0.3 | 2.7
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Max 2-Minute >=30| 2.6 2.8 8.6 9.1 11.5 12.2 13.8 10.6 7.5 6.0 2.8 0.0 | 87.5
Max 2-Minute >=40| 0.4 0.4 0.5 0.6 0.9 0.6 0.4 0.2 0.3 0.6 0.3 0.0 | 5.1
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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.