Weather History for Napa County, CA

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Thursday, November 18, 2010

  Actual Average Record
Temperature  
Mean Temperature 52 °F 50 °F  
Max Temperature 62 °F 63 °F 78 °F (2005)
Min Temperature 42 °F 39 °F 26 °F (2000)
Degree Days  
Heating Degree Days 13    
Month to date heating degree days 151  
Since 1 July heating degree days 505  
Cooling Degree Days 0    
Month to date cooling degree days 8  
Year to date cooling degree days 189  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 46 °F    
Average Humidity 78    
Maximum Humidity 100    
Minimum Humidity 56    
Precipitation  
Precipitation 0.00 in - 2.37 in (1982)
Month to date precipitation 0.57  
Year to date precipitation 20.07  
Since 1 July precipitation 2.73  
Sea Level Pressure  
Sea Level Pressure 30.06 in    
Wind  
Wind Speed 6 mph (WNW)    
Max Wind Speed 36 mph    
Max Gust Speed 141 mph    
Visibility 7 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Nov. 18, 2010 Rise Set
Actual Time 6:53 AM PST 4:54 PM PST
Civil Twilight 6:25 AM PST 5:23 PM PST
Nautical Twilight 5:53 AM PST 5:55 PM PST
Astronomical Twilight 5:21 AM PST 6:26 PM PST
Moon 2:55 PM PST (11/18) 3:57 AM PST (11/18)
Length of Visible Light 10h 57m
Length of Day
10h 01m
Waxing Gibbous, 92% of the Moon is Illuminated
Nov 18
Waxing Gibbous
Nov 21
Full
Nov 28
Last Quarter
Dec 5
New
Dec 13
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:20 AM 42.8 °F - 42.8 °F 100% 30.11 in 1.0 mi Calm Calm - N/A   Mostly Cloudy
12:54 AM 46.9 °F - 46.0 °F 97% 30.09 in 6.0 mi Calm Calm - N/A   Overcast
1:25 AM 48.2 °F - 48.2 °F 100% 30.11 in 2.5 mi NE 3.5 mph - N/A   Overcast
1:54 AM 48.0 °F - 46.9 °F 96% 30.08 in 2.5 mi Calm Calm - N/A   Overcast
2:33 AM 48.2 °F - 48.2 °F 100% 30.10 in 2.5 mi Calm Calm - N/A   Overcast
2:54 AM 46.9 °F - 46.0 °F 97% 30.08 in 1.2 mi West 5.8 mph - N/A   Overcast
3:04 AM 46.4 °F 43.5 °F 46.4 °F 100% 30.11 in 0.8 mi WNW 5.8 mph - N/A   Overcast
3:12 AM 46.4 °F 43.5 °F 46.4 °F 100% 30.11 in 0.8 mi NW 5.8 mph - N/A   Overcast
3:25 AM 46.4 °F 44.3 °F 46.4 °F 100% 30.10 in 0.5 mi NNW 4.6 mph - N/A Fog Fog
3:43 AM 46.4 °F - 46.4 °F 100% 30.11 in 0.8 mi Calm Calm - N/A   Overcast
3:54 AM 46.9 °F - 46.9 °F 100% 30.08 in 1.0 mi Calm Calm - N/A   Overcast
4:01 AM 46.4 °F - 46.4 °F 100% 30.11 in 0.8 mi Calm Calm - N/A   Overcast
4:11 AM 46.4 °F 43.5 °F 46.4 °F 100% 30.11 in 1.8 mi West 5.8 mph - N/A   Overcast
4:14 AM 46.4 °F 42.9 °F 46.4 °F 100% 30.11 in 3.0 mi West 6.9 mph - N/A   Overcast
4:33 AM 46.4 °F 41.9 °F 44.6 °F 93% 30.11 in 2.0 mi West 9.2 mph - N/A   Overcast
4:49 AM 44.6 °F 38.4 °F 44.6 °F 100% 30.11 in 5.0 mi West 12.7 mph - N/A   Overcast
4:54 AM 45.0 °F 40.6 °F 44.1 °F 97% 30.09 in 7.0 mi West 8.1 mph - N/A   Overcast
5:54 AM 45.0 °F - 44.1 °F 97% 30.10 in 10.0 mi Calm Calm - N/A   Overcast
6:09 AM 46.4 °F - 44.6 °F 93% 30.13 in 9.0 mi Calm Calm - N/A   Overcast
6:54 AM 46.0 °F - 44.1 °F 93% 30.10 in 9.0 mi Calm Calm - N/A   Overcast
7:34 AM 44.6 °F 42.2 °F 42.8 °F 93% 30.13 in 8.0 mi WNW 4.6 mph - N/A   Overcast
8:54 AM 46.9 °F - 44.1 °F 90% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
9:01 AM 48.2 °F - 44.6 °F 87% 30.13 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:54 AM 48.9 °F - 44.1 °F 83% 30.11 in 10.0 mi North 4.6 mph - N/A   Overcast
10:31 AM 50.0 °F - 44.6 °F 82% 30.13 in 10.0 mi NNW 6.9 mph 15.0 mph N/A   Squalls
10:54 AM 53.1 °F - 45.0 °F 74% 30.09 in 10.0 mi NNW 5.8 mph - N/A   Mostly Cloudy
10:58 AM 51.8 °F - 44.6 °F 76% 30.11 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
11:54 AM 55.9 °F - 45.0 °F 67% 30.05 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
12:54 PM 59.0 °F - 46.0 °F 62% 30.02 in 10.0 mi West 10.4 mph - N/A   Clear
1:54 PM 59.0 °F - 48.0 °F 67% 29.99 in 10.0 mi SW 9.2 mph - N/A   Clear
2:54 PM 62.1 °F - 46.9 °F 58% 29.98 in 10.0 mi West 12.7 mph - N/A   Clear
3:54 PM 59.0 °F - 46.9 °F 64% 29.97 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds
4:54 PM 55.0 °F - 46.9 °F 74% 29.97 in 10.0 mi West 11.5 mph - N/A   Clear
5:54 PM 53.1 °F - 46.0 °F 77% 29.97 in 10.0 mi West 9.2 mph - N/A   Clear
6:54 PM 52.0 °F - 46.0 °F 80% 29.96 in 10.0 mi NW 4.6 mph - N/A   Clear
7:54 PM 50.0 °F - 46.0 °F 86% 29.96 in 10.0 mi West 6.9 mph - N/A   Clear
8:54 PM 50.0 °F - 46.0 °F 86% 29.96 in 10.0 mi West 8.1 mph - N/A   Clear
9:54 PM 50.0 °F - 46.9 °F 89% 29.97 in 10.0 mi West 6.9 mph - N/A   Clear
10:54 PM 48.9 °F - 46.9 °F 93% 29.96 in 9.0 mi West 5.8 mph - N/A   Clear
11:24 PM 51.8 °F - 48.2 °F 88% 29.97 in 9.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
11:54 PM 52.0 °F - 50.0 °F 93% 29.94 in 10.0 mi WSW 5.8 mph - N/A   Overcast