Weather History for Napa County, CA

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Thursday, December 8, 2011

  Actual Average Record
Temperature  
Mean Temperature 43 °F 46 °F  
Max Temperature 59 °F 57 °F 65 °F (2014)
Min Temperature 26 °F 36 °F 19 °F (2009)
Degree Days  
Heating Degree Days 22    
Month to date heating degree days 127  
Since 1 July heating degree days 797  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 175  
Moisture  
Dew Point 31 °F    
Average Humidity 74    
Maximum Humidity 100    
Minimum Humidity 47    
Precipitation  
Precipitation 0.00 in - 1.34 in (1993)
Month to date precipitation 0.00  
Year to date precipitation 19.27  
Since 1 July precipitation 3.42  
Sea Level Pressure  
Sea Level Pressure 30.15 in    
Wind  
Wind Speed 2 mph (NNW)    
Max Wind Speed 8 mph    
Max Gust Speed 20 mph    
Visibility 6 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 08, 2011 Rise Set
Actual Time 7:13 AM PST 4:48 PM PST
Civil Twilight 6:43 AM PST 5:18 PM PST
Nautical Twilight 6:10 AM PST 5:51 PM PST
Astronomical Twilight 5:38 AM PST 6:23 PM PST
Moon 3:31 PM PST (12/8) 5:30 AM PST (12/8)
Length of Visible Light 10h 34m
Length of Day
9h 35m
Waxing Gibbous, 97% of the Moon is Illuminated
Dec 8
Waxing Gibbous
Dec 10
Full
Dec 17
Last Quarter
Dec 24
New
Dec 31
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:04 AM 33.8 °F - 32.0 °F 93% 30.17 in 1.0 mi Calm Calm - N/A   Mist
12:06 AM 33.8 °F - 32.0 °F 93% 30.17 in 2.0 mi Calm Calm - N/A   Partly Cloudy
12:13 AM 30.2 °F - 30.2 °F 100% 30.17 in 1.0 mi Calm Calm - N/A   Mist
12:16 AM 30.2 °F - 28.4 °F 93% 30.17 in 0.5 mi Calm Calm - N/A Fog Light Freezing Fog
12:23 AM 32.0 °F - 30.2 °F 93% 30.17 in 1.0 mi Calm Calm - N/A   Mist
12:25 AM 32.0 °F - 30.2 °F 93% 30.17 in 2.5 mi Calm Calm - N/A   Clear
12:32 AM 30.2 °F - 28.4 °F 93% 30.17 in 6.0 mi Calm Calm - N/A   Clear
12:54 AM 30.0 °F - 28.9 °F 96% 30.14 in 6.0 mi Calm Calm - N/A   Clear
1:10 AM 32.0 °F - 30.2 °F 93% 30.16 in 1.5 mi Calm Calm - N/A   Clear
1:14 AM 30.2 °F - 30.2 °F 100% 30.16 in 0.5 mi Calm Calm - N/A Fog Light Freezing Fog
1:21 AM 30.2 °F - 28.4 °F 93% 30.16 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
1:54 AM 30.0 °F - 28.0 °F 92% 30.14 in 1.0 mi Calm Calm - N/A   Mist
1:59 AM 30.2 °F - 28.4 °F 93% 30.17 in 0.5 mi Calm Calm - N/A Fog Light Freezing Fog
2:16 AM 28.4 °F - 26.6 °F 93% 30.17 in 1.0 mi Calm Calm - N/A   Mist
2:20 AM 28.4 °F - 26.6 °F 93% 30.17 in 2.0 mi Calm Calm - N/A   Partly Cloudy
2:27 AM 30.2 °F - 28.4 °F 93% 30.17 in 6.0 mi Calm Calm - N/A   Partly Cloudy
2:54 AM 28.9 °F - 28.0 °F 96% 30.15 in 10.0 mi Calm Calm - N/A   Clear
3:29 AM 28.4 °F - 26.6 °F 93% 30.16 in 1.8 mi Calm Calm - N/A   Clear
3:44 AM 28.4 °F 24.6 °F 26.6 °F 93% 30.17 in 3.0 mi NNW 3.5 mph - N/A   Clear
3:54 AM 28.9 °F 22.8 °F 26.1 °F 89% 30.15 in 9.0 mi North 5.8 mph - N/A   Clear
4:54 AM 28.9 °F - 27.0 °F 92% 30.14 in 9.0 mi Calm Calm - N/A   Clear
5:30 AM 28.4 °F - 26.6 °F 93% 30.17 in 2.5 mi Calm Calm - N/A   Clear
5:37 AM 30.2 °F 25.4 °F 26.6 °F 86% 30.17 in 8.0 mi North 4.6 mph - N/A   Clear
5:54 AM 28.0 °F - 25.0 °F 88% 30.14 in 9.0 mi Calm Calm - N/A   Clear
6:54 AM 27.0 °F - 26.1 °F 96% 30.15 in 9.0 mi Calm Calm - N/A   Clear
7:54 AM 28.9 °F - 27.0 °F 92% 30.15 in 6.0 mi Calm Calm - N/A   Clear
8:03 AM 32.0 °F 28.7 °F 28.4 °F 87% 30.17 in 7.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
8:11 AM 32.0 °F - 30.2 °F 93% 30.17 in 7.0 mi Calm Calm - N/A   Scattered Clouds
8:54 AM 37.9 °F - 34.0 °F 86% 30.16 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:54 AM 44.1 °F - 37.0 °F 76% 30.17 in 10.0 mi Calm Calm - N/A   Clear
10:54 AM 48.9 °F - 37.0 °F 64% 30.15 in 10.0 mi WSW 3.5 mph - N/A   Clear
11:54 AM 52.0 °F - 37.9 °F 59% 30.13 in 10.0 mi Calm Calm - N/A   Clear
12:54 PM 54.0 °F - 39.0 °F 57% 30.10 in 10.0 mi SW 5.8 mph - N/A   Clear
1:54 PM 57.0 °F - 37.9 °F 49% 30.09 in 10.0 mi West 4.6 mph - N/A   Clear
2:54 PM 57.9 °F - 37.0 °F 46% 30.08 in 10.0 mi WSW 4.6 mph - N/A   Clear
4:54 PM 51.1 °F - 36.0 °F 56% 30.08 in 10.0 mi Calm Calm - N/A   Clear
5:54 PM 44.1 °F 42.5 °F 33.1 °F 65% 30.09 in 10.0 mi East 3.5 mph - N/A   Clear
6:54 PM 41.0 °F 38.0 °F 33.1 °F 73% 30.10 in 10.0 mi North 4.6 mph - N/A   Clear
7:54 PM 37.9 °F 35.5 °F 30.9 °F 76% 30.10 in 9.0 mi NNE 3.5 mph - N/A   Clear
8:54 PM 41.0 °F 38.0 °F 34.0 °F 76% 30.12 in 10.0 mi NE 4.6 mph - N/A   Clear
9:54 PM 35.1 °F - 30.0 °F 82% 30.13 in 9.0 mi Calm Calm - N/A   Clear
10:54 PM 37.9 °F 34.4 °F 33.1 °F 83% 30.14 in 10.0 mi NNE 4.6 mph - N/A   Clear
11:54 PM 39.0 °F 33.4 °F 34.0 °F 82% 30.14 in 10.0 mi North 8.1 mph - N/A   Clear