STATION: VACAVILLE NUT TREE AIRPORT (KVCB), CA
CLIMATOLOGICAL SUMMARY. Period of Record: Apr 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 | 55.5 60.6 67.4 70.8 80.1 88.5 94.1 93.0 88.4 78.4 65.2 56.8 | 74.9
Avg Min Temp | 38.2 40.6 43.5 45.4 51.5 57.0 59.7 58.6 56.0 49.7 43.0 38.3 | 48.5
Avg Temperature | 46.8 50.6 55.4 58.1 65.8 72.8 76.9 75.8 72.2 64.1 54.1 47.6 | 61.7
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Extremes: | |
Extreme Max Temp| 71 77 87 95 106 110 114 108 106 104 85 76 | 114
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Date of Ext-Day | 05 27 16 26 31 14 23 15 02 01 14 20 |
-Year| 2003 2002 2004 2004 2001 2000 2006 2008 1998 2001 2008 1999 |
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Extreme Min Temp| 20 26 29 32 38 43 49 48 42 34 28 17 | 17
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Date of Ext-Day | 14 08 08 09 17 08 12 23 30 31 18 23 |
-Year| 2007 2003 2002 1999 1998 1999 2001 2002 2007 2002 2000 1998 |
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Heating Degree Days | 564 407 302 222 73 8 0 0 7 85 328 541 | 2537
Cooling Degree Days | 0 0 5 15 97 240 370 335 224 56 1 0 | 1343
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.7 5.7 13.6 23.2 22.7 14.3 2.8 0.0 0.0 | 82.9
Max Temp >= 75 | 0.0 0.5 6.6 10.4 21.5 28.0 30.9 30.6 28.2 21.1 3.5 0.3 | 181.7
Max Temp <= 32 | 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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Min Temp <= 32 | 6.9 2.5 0.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 1.4 6.3 | 17.8
Min Temp <= 20 | 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 | 0.5
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
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Avg Dew Point Temp | 39.3 40.9 41.8 42.6 46.7 49.2 52.5 51.4 47.0 42.4 42.7 38.6 | 44.6
Avg Wet Bulb Temp | 43.4 46.0 48.8 50.4 55.6 59.5 62.2 61.3 58.0 52.8 48.5 43.5 | 52.5
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Avg Sea Level Pres | 30.15 30.07 30.05 30.00 29.93 29.87 29.86 29.86 29.86 29.97 30.09 30.15 | 29.99
(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 | 0.1 0.5 0.6 0.3 0.2 0.0 0.1 0.5 0.3 0.1 0.1 0.2 | 2.9
Heavy Fog | 7.8 1.4 0.6 0.0 0.1 0.0 0.0 0.0 0.0 0.1 2.5 3.8 | 16.3
Fog | 20.7 13.9 9.1 4.7 2.8 0.6 0.1 0.3 1.1 4.0 14.5 18.6 | 90.6
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 | 3.74 5.05 2.61 1.33 0.92 0.08 0.01 0.04 0.09 0.91 2.60 5.81 | 23.18
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Maximum Daily | 2.61 2.59 1.90 1.11 1.73 0.18 0.09 0.20 0.23 1.24 3.13 4.50 | 4.50
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Date of Ext-Day | 04 13 14 11 28 08 18 21 19 19 07 13 |
-Year| 2008 2000 2003 2006 1998 2005 2007 2003 2004 2004 2002 2002 |
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Avg Number of Days: | |
>= 0.01 | 13.8 11.3 9.1 5.3 3.6 1.0 0.1 0.3 0.9 3.2 10.3 12.5 | 71.4
>= 0.10 | 6.6 8.0 5.3 2.9 1.9 0.5 0.0 0.2 0.5 2.0 4.6 8.1 | 40.5
>= 0.25 | 4.7 5.5 3.8 2.3 1.4 0.0 0.0 0.0 0.0 1.4 2.9 5.8 | 27.8
>= 0.50 | 2.5 3.7 1.9 0.7 0.6 0.0 0.0 0.0 0.0 0.7 1.5 3.6 | 15.3
>= 1.00 | 0.7 1.5 0.5 0.2 0.2 0.0 0.0 0.0 0.0 0.1 0.6 1.6 | 5.4
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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| 4.6 5.4 6.1 6.8 7.0 7.4 7.0 6.5 5.7 5.3 4.3 4.7 | 5.9
Daily Avg Max 2-Min | 13.5 15.2 16.5 17.7 17.5 17.3 15.9 15.3 15.2 14.9 13.2 14.2 | 15.5
Daily Avg Peak Gust | 17.3 19.7 21.1 22.7 22.3 22.3 20.2 19.8 19.7 19.3 17.2 18.5 | 20.0
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Maximum Daily Avg | 19.5 20.6 21.6 18.0 22.0 18.5 14.4 18.2 23.2 23.8 17.9 19.9 | 23.8
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Maximum 2-Minute Avg| 35 35 39 36 36 33 28 32 41 39 33 36 | 41
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Date of Max 2min-Day| 04 07 25 22 02 13 30 05 22 22 06 29 |
-Year| 2008 2001 2006 1999 2001 2000 2003 2007 2006 2000 2000 2003 |
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Maximum Peak Gust | 48 46 47 47 51 43 33 39 52 48 46 45 | 52
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Date of Max Gust-Day| 04 07 25 22 22 16 30 05 22 22 24 29 |
-Year| 2008 2001 2006 1999 2008 1998 2003 2007 2006 2000 2001 2003 |
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Avg Number of Days: | |
Peak Gust >=30 | 3.1 3.9 4.6 5.3 3.3 2.0 0.6 0.9 3.1 3.5 2.7 4.0 | 37.1
Peak Gust >=40 | 0.5 0.6 0.8 1.0 0.4 0.6 0.0 0.0 0.1 0.5 0.6 0.7 | 5.8
Peak Gust >=50 | 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 | 0.2
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Max 2-Minute >=30| 0.9 0.9 1.0 1.2 0.6 0.6 0.0 0.1 0.4 0.7 0.8 0.0 | 7.1
Max 2-Minute >=40| 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 | 0.1
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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.