Weather History for Napa County, CA

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Thursday, December 6, 2012

  Actual Average Record
Temperature  
Mean Temperature 51 °F 47 °F  
Max Temperature 61 °F 57 °F 66 °F (2006)
Min Temperature 41 °F 36 °F 20 °F (2013)
Degree Days  
Heating Degree Days 14    
Month to date heating degree days 62  
Since 1 July heating degree days 634  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 204  
Moisture  
Dew Point 49 °F    
Average Humidity 83    
Maximum Humidity 96    
Minimum Humidity 69    
Precipitation  
Precipitation 0.00 in - 1.78 in (1955)
Month to date precipitation 1.72  
Year to date precipitation 19.10  
Since 1 July precipitation 5.33  
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 2 mph (WSW)    
Max Wind Speed 12 mph    
Max Gust Speed 14 mph    
Visibility 7 miles    
Events Fog    
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. 06, 2012 Rise Set
Actual Time 7:12 AM PST 4:48 PM PST
Civil Twilight 6:42 AM PST 5:18 PM PST
Nautical Twilight 6:09 AM PST 5:51 PM PST
Astronomical Twilight 5:37 AM PST 6:23 PM PST
Moon No Moon Rise 12:12 PM PST (12/6)
Length of Visible Light 10h 35m
Length of Day
9h 36m
Waning Gibbous, 48% of the Moon is Illuminated
Dec 6
Waning Gibbous
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter

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 55.9 °F - 54.0 °F 93% 30.10 in 10.0 mi Calm Calm - N/A   Overcast
1:54 AM 55.9 °F - 54.0 °F 93% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
2:38 AM 55.4 °F - 53.6 °F 94% 30.12 in 4.0 mi Calm Calm - N/A   Overcast
2:44 AM 55.4 °F - 53.6 °F 94% 30.12 in 5.0 mi Calm Calm - N/A   Overcast
2:54 AM 55.9 °F - 54.0 °F 93% 30.10 in 5.0 mi Calm Calm - N/A   Overcast
3:19 AM 55.4 °F - 53.6 °F 94% 30.11 in 9.0 mi Calm Calm - N/A   Overcast
3:47 AM 55.4 °F - 53.6 °F 94% 30.11 in 9.0 mi Calm Calm - N/A   Overcast
3:54 AM 55.9 °F - 54.0 °F 93% 30.08 in 8.0 mi Calm Calm - N/A   Overcast
4:27 AM 55.4 °F - 53.6 °F 94% 30.10 in 6.0 mi Calm Calm - N/A   Overcast
4:54 AM 55.9 °F - 54.0 °F 93% 30.07 in 6.0 mi Calm Calm - N/A   Overcast
5:14 AM 55.4 °F - 53.6 °F 94% 30.10 in 3.0 mi West 5.8 mph - N/A   Overcast
5:54 AM 54.0 °F - 52.0 °F 93% 30.08 in 10.0 mi West 5.8 mph - N/A   Overcast
6:19 AM 53.6 °F - 51.8 °F 94% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
6:54 AM 55.0 °F - 52.0 °F 89% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
7:27 AM 53.6 °F - 51.8 °F 94% 30.11 in 8.0 mi North - - N/A   Overcast
7:54 AM 54.0 °F - 52.0 °F 93% 30.09 in 10.0 mi SE 4.6 mph - N/A   Overcast
8:05 AM 53.6 °F - 51.8 °F 94% 30.12 in 10.0 mi South 4.6 mph - N/A   Overcast
8:54 AM 55.0 °F - 52.0 °F 89% 30.11 in 10.0 mi SW 6.9 mph - N/A   Overcast
9:01 AM 55.4 °F - 51.8 °F 88% 30.13 in 10.0 mi SW 6.9 mph - N/A   Overcast
9:25 AM 55.4 °F - 51.8 °F 88% 30.13 in 10.0 mi SW 4.6 mph - N/A   Overcast
9:54 AM 55.0 °F - 52.0 °F 89% 30.12 in 10.0 mi Calm Calm - N/A   Overcast
10:54 AM 57.0 °F - 52.0 °F 83% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
11:20 AM 57.2 °F - 53.6 °F 88% 30.13 in 10.0 mi WSW 3.5 mph - N/A   Overcast
11:54 AM 57.9 °F - 52.0 °F 81% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:30 PM 59.0 °F - 53.6 °F 82% 30.11 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:54 PM 59.0 °F - 53.1 °F 81% 30.07 in 10.0 mi SW 5.8 mph - N/A   Mostly Cloudy
1:54 PM 60.1 °F - 53.1 °F 78% 30.06 in 10.0 mi SSW 4.6 mph - N/A   Mostly Cloudy
2:54 PM 60.1 °F - 50.0 °F 69% 30.04 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
3:54 PM 59.0 °F - 50.0 °F 72% 30.06 in 10.0 mi SW 5.8 mph - N/A   Mostly Cloudy
4:54 PM 55.0 °F - 48.0 °F 77% 30.06 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
5:54 PM 52.0 °F - 48.0 °F 86% 30.07 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:54 PM 50.0 °F - 46.9 °F 89% 30.09 in 10.0 mi Calm Calm - N/A   Clear
7:54 PM 46.9 °F - 44.1 °F 90% 30.09 in 10.0 mi NNE 3.5 mph - N/A   Clear
8:54 PM 45.0 °F - 43.0 °F 93% 30.10 in 10.0 mi Calm Calm - N/A   Clear
9:40 PM 42.8 °F - 41.0 °F 93% 30.14 in 4.0 mi Calm Calm - N/A   Scattered Clouds
9:42 PM 42.8 °F - 41.0 °F 93% 30.14 in 1.8 mi Calm Calm - N/A   Scattered Clouds
9:50 PM 42.8 °F - 42.8 °F 100% 30.13 in 0.8 mi Calm Calm - N/A   Mist
9:54 PM 42.1 °F - 41.0 °F 96% 30.11 in 0.5 mi Calm Calm - N/A Fog Fog
10:14 PM 42.8 °F 41.1 °F 42.8 °F 100% 30.13 in 1.0 mi NW 3.5 mph - N/A   Mist
10:22 PM 42.8 °F - 42.8 °F 100% 30.13 in 1.2 mi Calm Calm - N/A   Partly Cloudy
10:28 PM 42.8 °F - 42.8 °F 100% 30.13 in 0.8 mi Calm Calm - N/A   Mist
10:39 PM 44.6 °F - 42.8 °F 93% 30.14 in 0.5 mi Calm Calm - N/A Fog Fog
10:54 PM 44.1 °F - 43.0 °F 96% 30.11 in 0.5 mi Calm Calm - N/A Fog Fog
11:08 PM 41.0 °F 38.0 °F 39.2 °F 93% 30.13 in 1.0 mi North 4.6 mph - N/A   Mist
11:16 PM 44.6 °F 40.7 °F 42.8 °F 93% 30.14 in 2.0 mi North 6.9 mph - N/A   Partly Cloudy
11:24 PM 44.6 °F 40.7 °F 42.8 °F 93% 30.13 in 7.0 mi North 6.9 mph - N/A   Clear
11:43 PM 44.6 °F - 42.8 °F 93% 30.13 in 1.8 mi Calm Calm - N/A   Partly Cloudy
11:54 PM 45.0 °F 42.6 °F 43.0 °F 93% 30.11 in 2.5 mi NNW 4.6 mph - N/A   Partly Cloudy