STATION: WHIDBEY ISLAND NAS (KNUW), WA
CLIMATOLOGICAL SUMMARY. Period of Record: Jul 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 | 44.7 48.5 51.0 54.3 59.6 62.0 66.1 67.1 62.7 57.0 51.4 44.7 | 55.8
Avg Min Temp | 34.5 36.2 38.5 40.4 45.6 48.9 51.3 51.6 47.9 43.1 38.9 34.2 | 42.6
Avg Temperature | 39.6 42.4 44.7 47.3 52.6 55.5 58.7 59.4 55.3 50.0 45.1 39.5 | 49.2
| |
Extremes: | |
Extreme Max Temp| 55 59 66 72 80 74 81 76 77 69 64 60 | 81
| |
Date of Ext-Day | 23 29 06 26 17 28 11 10 10 02 01 03 |
-Year| 2007 2008 2007 1997 2008 2007 2007 1997 1997 2008 2008 2007 |
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Extreme Min Temp| 17 26 24 28 33 43 43 45 33 31 14 8 | 8
| |
Date of Ext-Day | 12 05 01 01 15 19 11 31 29 11 23 20 |
-Year| 2007 1997 2007 2008 2007 2008 2008 2008 2008 2008 2007 2008 |
| |
Heating Degree Days | 787 639 628 530 383 286 197 175 291 464 596 792 | 5767
Cooling Degree Days | 0 0 0 0 0 0 2 0 0 0 0 0 | 2
| |
Avg Number of Days: | |
Max Temp >= 90 | 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 Temp >= 75 | 0.0 0.0 0.0 0.0 0.3 0.0 1.3 2.2 0.3 0.0 0.0 0.0 | 4.1
Max Temp <= 32 | 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.3 | 2.3
| |
Min Temp <= 32 | 9.5 8.4 3.0 2.4 0.0 0.0 0.0 0.0 0.0 1.4 6.1 9.8 | 40.6
Min Temp <= 20 | 2.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.3 | 4.1
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 0.0 | 0.0
| |
Avg Dew Point Temp | 34.0 37.1 37.9 39.8 45.6 48.3 51.8 52.6 50.0 44.1 38.9 33.9 | 42.8
Avg Wet Bulb Temp | 37.4 40.2 41.6 43.8 49.0 51.3 54.5 55.2 52.3 47.0 42.7 37.4 | 46.0
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Avg Sea Level Pres | 30.09 30.10 30.15 30.09 30.08 30.05 30.06 30.01 30.05 30.14 30.08 30.13 | 30.08
(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 | 2.3 1.7 0.7 0.0 3.0 0.7 1.0 2.2 2.8 1.7 1.8 1.0 | 18.8
Fog | 13.7 13.0 11.5 6.4 10.3 8.0 5.8 9.0 10.6 8.3 10.5 9.4 | 116.5
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
| |
Average Monthly | 2.73 1.94 2.45 1.27 1.38 1.73 0.72 0.69 1.27 2.08 2.50 2.09 | 20.85
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Maximum Daily | 0.94 1.11 0.48 0.46 0.94 0.80 0.42 0.38 0.58 0.75 1.21 0.84 | 1.21
| |
Date of Ext-Day | 02 14 24 26 31 03 18 24 03 30 27 29 |
-Year| 2007 1997 2007 1997 1997 2008 2007 2008 1996 1997 1996 1996 |
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Avg Number of Days: | |
>= 0.01 | 17.7 16.9 20.2 14.5 12.3 13.3 8.1 10.2 14.4 20.3 18.8 18.2 | 185.0
>= 0.10 | 9.0 5.7 8.4 3.4 3.7 5.3 2.5 2.5 4.3 7.3 8.2 7.5 | 67.9
>= 0.25 | 3.3 2.0 2.7 2.0 1.7 2.0 1.0 0.5 1.8 2.0 2.2 2.1 | 23.3
>= 0.50 | 1.0 0.7 0.0 0.0 0.3 0.3 0.0 0.0 0.3 0.3 1.0 0.2 | 4.1
>= 1.00 | 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 0.0 | 0.8
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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| 10.7 8.6 11.1 8.9 7.4 7.1 6.5 5.8 5.8 8.4 8.8 11.3 | 8.4
Daily Avg Max 2-Min | 23.6 20.8 24.6 20.0 17.1 16.3 15.4 15.4 15.5 22.0 22.3 25.3 | 19.9
Daily Avg Peak Gust | 29.8 26.2 30.7 25.0 21.7 21.2 19.4 19.9 19.6 28.9 28.8 31.6 | 25.2
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Maximum Daily Avg | 27.4 24.1 26.7 23.6 19.1 14.7 16.3 13.1 22.2 24.7 26.7 29.1 | 29.1
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Maximum 2-Minute Avg| 48 47 47 41 31 32 36 32 39 40 51 58 | 58
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Date of Max 2min-Day| 05 05 30 20 08 09 22 25 29 01 12 15 |
-Year| 2007 2008 1997 1997 2007 2008 2007 2007 2007 1997 2007 2006 |
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Maximum Peak Gust | 62 72 60 52 40 40 49 53 55 59 70 69 | 72
| |
Date of Max Gust-Day| 09 24 30 13 08 09 22 25 30 28 12 15 |
-Year| 2007 2008 1997 2007 2007 2008 2007 2007 2008 2008 2007 2006 |
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Avg Number of Days: | |
Peak Gust >=30 | 15.3 11.4 16.0 9.4 5.3 4.7 2.9 5.6 5.1 15.5 14.2 16.3 | 121.7
Peak Gust >=40 | 7.8 4.5 7.7 2.8 0.4 0.3 0.5 1.4 2.2 7.0 7.5 8.8 | 50.8
Peak Gust >=50 | 3.1 1.4 1.4 0.3 0.0 0.0 0.0 0.3 0.3 1.9 1.9 2.4 | 13.0
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Max 2-Minute >=30| 10.6 6.5 10.1 3.8 1.8 0.3 0.5 0.8 3.0 7.8 8.1 0.0 | 53.3
Max 2-Minute >=40| 3.1 1.0 1.7 0.7 0.0 0.0 0.0 0.0 0.0 0.8 0.6 0.0 | 7.9
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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.