Weather History for Napa County, CA

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Friday, November 12, 2010

  Actual Average Record
Temperature  
Mean Temperature 50 °F 52 °F  
Max Temperature 65 °F 65 °F 76 °F (1999)
Min Temperature 35 °F 39 °F 22 °F (2000)
Degree Days  
Heating Degree Days 15    
Month to date heating degree days 107  
Since 1 July heating degree days 461  
Cooling Degree Days 0    
Month to date cooling degree days 1  
Year to date cooling degree days 182  
Moisture  
Dew Point 40 °F    
Average Humidity 66    
Maximum Humidity 92    
Minimum Humidity 40    
Precipitation  
Precipitation 0.00 in - 1.25 in (2001)
Month to date precipitation 0.57  
Year to date precipitation 20.07  
Since 1 July precipitation 2.73  
Sea Level Pressure  
Sea Level Pressure 30.38 in    
Wind  
Wind Speed 2 mph (ESE)    
Max Wind Speed 8 mph    
Max Gust Speed 12 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Nov. 12, 2010 Rise Set
Actual Time 6:47 AM PST 4:59 PM PST
Civil Twilight 6:19 AM PST 5:27 PM PST
Nautical Twilight 5:47 AM PST 5:58 PM PST
Astronomical Twilight 5:16 AM PST 6:29 PM PST
Moon 12:19 PM PST (11/12) 11:10 PM PST (11/12)
Length of Visible Light 11h 07m
Length of Day
10h 11m
Waxing Crescent, 42% of the Moon is Illuminated
Nov 12
Waxing Crescent
Nov 13
First Quarter
Nov 21
Full
Nov 28
Last Quarter
Dec 5
New

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 37.0 °F - 35.1 °F 93% 30.40 in 10.0 mi Calm Calm - N/A   Clear
1:54 AM 39.9 °F - 37.9 °F 93% 30.40 in 10.0 mi Calm Calm - N/A   Clear
2:54 AM 37.0 °F - 36.0 °F 96% 30.41 in 10.0 mi Calm Calm - N/A   Clear
3:54 AM 37.0 °F 34.5 °F 35.1 °F 93% 30.41 in 10.0 mi NNE 3.5 mph - N/A   Clear
4:54 AM 39.0 °F 35.7 °F 37.0 °F 93% 30.42 in 10.0 mi NNE 4.6 mph - N/A   Clear
5:54 AM 39.9 °F 37.8 °F 37.0 °F 89% 30.43 in 10.0 mi North 3.5 mph - N/A   Clear
6:54 AM 39.9 °F 37.8 °F 37.0 °F 89% 30.44 in 10.0 mi NNE 3.5 mph - N/A   Clear
7:54 AM 44.1 °F - 41.0 °F 89% 30.46 in 10.0 mi Calm Calm - N/A   Clear
8:54 AM 48.9 °F - 43.0 °F 80% 30.45 in 10.0 mi Calm Calm - N/A   Clear
9:54 AM 55.0 °F - 41.0 °F 59% 30.45 in 10.0 mi Calm Calm - N/A   Clear
10:54 AM 59.0 °F - 44.1 °F 58% 30.43 in 10.0 mi Variable 3.5 mph - N/A   Clear
11:54 AM 61.0 °F - 43.0 °F 52% 30.39 in 10.0 mi WSW 3.5 mph - N/A   Clear
12:54 PM 64.0 °F - 44.1 °F 48% 30.36 in 10.0 mi SW 6.9 mph - N/A   Scattered Clouds
1:54 PM 64.9 °F - 39.9 °F 40% 30.34 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
2:54 PM 64.0 °F - 42.1 °F 45% 30.33 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
3:54 PM 64.9 °F - 39.9 °F 40% 30.32 in 10.0 mi Calm Calm - N/A   Clear
4:54 PM 59.0 °F - 43.0 °F 55% 30.32 in 10.0 mi South 3.5 mph - N/A   Clear
6:54 PM 46.0 °F 44.8 °F 39.9 °F 79% 30.32 in 10.0 mi East 3.5 mph - N/A   Clear
7:54 PM 46.9 °F - 41.0 °F 80% 30.32 in 10.0 mi Calm Calm - N/A   Clear
8:54 PM 45.0 °F 43.5 °F 39.9 °F 82% 30.32 in 10.0 mi East 3.5 mph - N/A   Clear
10:54 PM 39.0 °F - 37.0 °F 93% 30.32 in 10.0 mi Calm Calm - N/A   Clear
11:54 PM 41.0 °F - 39.9 °F 96% 30.32 in 10.0 mi Calm Calm - N/A   Clear