Weather History for Napa County, CA

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Thursday, February 23, 2012

  Actual Average Record
Temperature  
Mean Temperature 58 °F 50 °F  
Max Temperature 78 °F 61 °F 78 °F (2012)
Min Temperature 38 °F 39 °F 32 °F (2011)
Degree Days  
Heating Degree Days 7    
Month to date heating degree days 332  
Since 1 July heating degree days 2153  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 32 °F    
Average Humidity 56    
Maximum Humidity 100    
Minimum Humidity 11    
Precipitation  
Precipitation 0.00 in - 1.50 in (1927)
Month to date precipitation 0.87  
Year to date precipitation 4.87  
Since 1 July precipitation 8.45  
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 8 mph (NNW)    
Max Wind Speed 26 mph    
Max Gust Speed 32 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 23, 2012 Rise Set
Actual Time 6:49 AM PST 5:55 PM PST
Civil Twilight 6:23 AM PST 6:22 PM PST
Nautical Twilight 5:52 AM PST 6:53 PM PST
Astronomical Twilight 5:21 AM PST 7:23 PM PST
Moon 7:21 AM PST (2/23) 8:03 PM PST (2/23)
Length of Visible Light 11h 59m
Length of Day
11h 06m
Waxing Crescent, 4% of the Moon is Illuminated
Feb 23
Waxing Crescent
Feb 29
First Quarter
Mar 8
Full
Mar 14
Last Quarter
Mar 22
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 50.0 °F - 45.0 °F 83% 30.07 in 10.0 mi SSW 3.5 mph - N/A   Clear
1:54 AM 46.9 °F - 44.1 °F 90% 30.06 in 10.0 mi SW 3.5 mph - N/A   Clear
2:54 AM 46.9 °F - 44.1 °F 90% 30.05 in 10.0 mi Calm Calm - N/A   Clear
4:22 AM 42.8 °F - 42.8 °F 100% 30.08 in 1.5 mi Calm Calm - N/A   Clear
4:31 AM 42.8 °F 41.1 °F 39.2 °F 87% 30.07 in 0.8 mi East 3.5 mph - N/A   Clear
4:35 AM 42.8 °F 41.1 °F 41.0 °F 93% 30.07 in 2.5 mi East 3.5 mph - N/A   Clear
4:42 AM 42.8 °F - 41.0 °F 93% 30.08 in 10.0 mi Calm Calm - N/A   Clear
4:54 AM 39.9 °F - 39.0 °F 97% 30.05 in 10.0 mi Calm Calm - N/A   Clear
5:54 AM 39.0 °F 35.7 °F 37.9 °F 96% 30.05 in 10.0 mi West 4.6 mph - N/A   Clear
6:54 AM 46.9 °F - 42.1 °F 83% 30.04 in 10.0 mi South 3.5 mph - N/A   Clear
7:54 AM 50.0 °F - 45.0 °F 83% 30.06 in 10.0 mi North 5.8 mph - N/A   Clear
8:54 AM 55.0 °F - 46.0 °F 72% 30.07 in 10.0 mi South 5.8 mph - N/A   Clear
9:54 AM 63.0 °F - 42.1 °F 46% 30.06 in 10.0 mi South 6.9 mph - N/A   Clear
10:54 AM 70.0 °F - 30.9 °F 24% 30.05 in 10.0 mi NW 4.6 mph - N/A   Clear
11:54 AM 73.9 °F - 21.9 °F 14% 30.03 in 10.0 mi NNW 12.7 mph - N/A   Clear
12:54 PM 75.9 °F - 19.9 °F 12% 30.00 in 10.0 mi North 11.5 mph 20.7 mph N/A   Clear
1:54 PM 77.0 °F - 19.0 °F 11% 29.98 in 10.0 mi North 12.7 mph 21.9 mph N/A   Clear
2:54 PM 77.0 °F - 19.9 °F 12% 29.96 in 10.0 mi NNW 12.7 mph - N/A   Clear
3:54 PM 75.9 °F - 21.9 °F 13% 29.95 in 10.0 mi North 16.1 mph 26.5 mph N/A   Clear
4:54 PM 73.0 °F - 19.9 °F 14% 29.93 in 10.0 mi North 17.3 mph 25.3 mph N/A   Clear
5:54 PM 66.9 °F - 24.1 °F 20% 29.94 in 10.0 mi NNW 9.2 mph - N/A   Clear
6:54 PM 59.0 °F - 26.1 °F 28% 29.96 in 10.0 mi WSW 8.1 mph - N/A   Clear
7:54 PM 64.0 °F - 21.0 °F 19% 29.96 in 10.0 mi Calm Calm - N/A   Clear
8:54 PM 66.9 °F - 17.1 °F 15% 29.98 in 10.0 mi Variable 3.5 mph - N/A   Clear
9:54 PM 64.9 °F - 21.9 °F 19% 29.97 in 10.0 mi North 12.7 mph - N/A   Clear
10:54 PM 64.9 °F - 21.9 °F 19% 29.95 in 10.0 mi North 21.9 mph - N/A   Clear
11:54 PM 64.9 °F - 19.9 °F 18% 29.94 in 10.0 mi North 24.2 mph - N/A   Clear