Weather History for Napa County, CA

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Saturday, December 1, 2012

  Actual Average Record
Temperature  
Mean Temperature 61 °F 47 °F  
Max Temperature 64 °F 58 °F 69 °F (2011)
Min Temperature 57 °F 37 °F 20 °F (2007)
Degree Days  
Heating Degree Days 4    
Month to date heating degree days 4  
Since 1 July heating degree days 576  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 204  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 56 °F    
Average Humidity 88    
Maximum Humidity 100    
Minimum Humidity 75    
Precipitation  
Precipitation 0.32 in - 2.30 in (1951)
Month to date precipitation 0.32  
Year to date precipitation 17.70  
Since 1 July precipitation 3.93  
Sea Level Pressure  
Sea Level Pressure 29.95 in    
Wind  
Wind Speed 8 mph (South)    
Max Wind Speed 18 mph    
Max Gust Speed 26 mph    
Visibility 5 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 01, 2012 Rise Set
Actual Time 7:07 AM PST 4:49 PM PST
Civil Twilight 6:38 AM PST 5:18 PM PST
Nautical Twilight 6:05 AM PST 5:51 PM PST
Astronomical Twilight 5:33 AM PST 6:22 PM PST
Moon 7:43 PM PST (12/1) 9:24 AM PST (12/1)
Length of Visible Light 10h 40m
Length of Day
9h 41m
Waning Gibbous, 91% of the Moon is Illuminated
Dec 1
Waning Gibbous
Dec 6
Last Quarter
Dec 13
New
Dec 19
First Quarter
Dec 28
Full

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
1:54 AM 59.0 °F 52.0 °F 78% 29.95 in 10.0 mi SSE 8.1 mph - 0.00 in   Mostly Cloudy
2:37 AM 59.0 °F 53.6 °F 82% 29.97 in 10.0 mi SSE 9.2 mph - N/A   Overcast
3:54 AM 57.0 °F 55.0 °F 93% 29.94 in 4.0 mi SSE 8.1 mph - 0.00 in Rain Light Rain
4:45 AM 57.2 °F 55.4 °F 94% 29.95 in 4.0 mi SSE 5.8 mph - 0.01 in Rain Light Rain
4:54 AM 57.0 °F 55.0 °F 93% 29.93 in 4.0 mi SSE 5.8 mph - 0.01 in   Overcast
5:49 AM 57.2 °F 55.4 °F 94% 29.97 in 2.5 mi SW 3.5 mph - 0.00 in Rain Light Rain
5:54 AM 57.9 °F 55.9 °F 93% 29.95 in 2.5 mi SSW 5.8 mph - 0.01 in Rain Light Rain
6:13 AM 57.2 °F 55.4 °F 94% 29.98 in 3.0 mi South 8.1 mph - 0.03 in Rain Light Rain
6:54 AM 57.0 °F 55.9 °F 96% 29.97 in 4.0 mi SSW 6.9 mph - 0.03 in Rain Light Rain
7:11 AM 57.2 °F 55.4 °F 94% 30.00 in 2.5 mi SW 5.8 mph - 0.00 in Rain Light Rain
7:36 AM 57.2 °F 55.4 °F 94% 29.99 in 1.5 mi SSW 3.5 mph - 0.03 in Rain Light Rain
7:54 AM 57.9 °F 57.0 °F 97% 29.98 in 1.5 mi Calm Calm - 0.04 in Rain Light Rain
8:54 AM 57.9 °F 57.0 °F 97% 29.99 in 1.5 mi WSW 3.5 mph - 0.08 in Rain Light Rain
8:58 AM 57.2 °F 57.2 °F 100% 30.01 in 3.0 mi WSW 4.6 mph - 0.00 in Rain Light Rain
9:03 AM 57.2 °F 57.2 °F 100% 30.01 in 2.5 mi SW 4.6 mph - 0.00 in Rain Light Rain
9:54 AM 60.1 °F 57.9 °F 93% 30.00 in 2.5 mi SSW 9.2 mph - 0.01 in Rain Light Rain
10:05 AM 59.0 °F 57.2 °F 94% 30.03 in 1.8 mi SSW 9.2 mph - 0.02 in Rain Light Rain
10:19 AM 60.8 °F 57.2 °F 88% 30.03 in 3.0 mi SW 6.9 mph - 0.03 in Rain Light Rain
10:33 AM 60.8 °F 57.2 °F 88% 30.03 in 7.0 mi South 5.8 mph - 0.03 in   Overcast
10:45 AM 60.8 °F 59.0 °F 94% 30.03 in 10.0 mi SSW 4.6 mph - 0.03 in   Overcast
10:54 AM 60.1 °F 57.9 °F 93% 30.00 in 10.0 mi SSW 5.8 mph - 0.03 in   Overcast
11:10 AM 60.8 °F 57.2 °F 88% 30.02 in 10.0 mi South 6.9 mph - N/A   Overcast
11:54 AM 62.1 °F 59.0 °F 90% 29.98 in 10.0 mi SSW 8.1 mph - N/A   Overcast
12:54 PM 64.0 °F 59.0 °F 84% 29.96 in 10.0 mi SW 12.7 mph - N/A   Overcast
12:57 PM 64.4 °F 59.0 °F 83% 29.99 in 10.0 mi SW 13.8 mph - N/A   Overcast
2:54 PM 62.1 °F 57.9 °F 86% 29.95 in 8.0 mi SSW 10.4 mph - 0.00 in   Overcast
3:54 PM 61.0 °F 57.9 °F 90% 29.95 in 8.0 mi SSW 9.2 mph - N/A   Overcast
4:54 PM 60.1 °F 55.9 °F 86% 29.94 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
5:54 PM 59.0 °F 55.0 °F 87% 29.94 in 7.0 mi South 8.1 mph - 0.02 in Rain Light Rain
6:54 PM 57.9 °F 55.0 °F 90% 29.90 in 7.0 mi SE 4.6 mph - 0.00 in Rain Light Rain
7:39 PM 59.0 °F 55.4 °F 88% 29.91 in 5.0 mi SSE 8.1 mph - 0.03 in Rain Rain
7:54 PM 59.0 °F 55.9 °F 90% 29.88 in 4.0 mi SSE 11.5 mph - 0.05 in Rain Light Rain
8:23 PM 59.0 °F 55.4 °F 88% 29.91 in 7.0 mi SSE 10.4 mph - 0.00 in   Overcast
8:54 PM 57.9 °F 55.9 °F 93% 29.87 in 5.0 mi SE 11.5 mph - 0.01 in Rain Light Rain
9:16 PM 57.2 °F 55.4 °F 94% 29.88 in 3.0 mi SE 11.5 mph - 0.01 in Rain Light Rain
9:46 PM 57.2 °F 55.4 °F 94% 29.88 in 2.5 mi SSE 6.9 mph - 0.02 in Rain Light Rain
9:54 PM 57.9 °F 55.9 °F 93% 29.86 in 3.0 mi SSE 6.9 mph - 0.02 in Rain Light Rain
10:11 PM 57.2 °F 55.4 °F 94% 29.88 in 3.0 mi SSE 8.1 mph - 0.00 in Rain Light Rain
10:54 PM 60.1 °F 57.9 °F 93% 29.85 in 3.0 mi South 12.7 mph 18.4 mph 0.01 in   Overcast
11:54 PM 60.1 °F 57.9 °F 93% 29.84 in 4.0 mi South 15.0 mph 26.5 mph 0.00 in   Overcast