Napa County, CA

5:55 AM PDT on September 24, 2017 (GMT -0700)
Napa County

Weather History for KAPC - December, 2012

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Sunday, December 16, 2012

  Actual Average Record
Temperature  
Mean Temperature 50 °F 46 °F  
Max Temperature 55 °F 55 °F 69 °F (2011)
Min Temperature 45 °F 36 °F 28 °F (2006)
Degree Days  
Heating Degree Days 15    
Month to date heating degree days 248  
Since 1 July heating degree days 820  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 204  
Moisture  
Dew Point 45 °F    
Average Humidity 84    
Maximum Humidity 93    
Minimum Humidity 74    
Precipitation  
Precipitation 0.02 in - 1.06 in (1970)
Month to date precipitation 1.83  
Year to date precipitation 19.21  
Since 1 July precipitation 5.44  
Sea Level Pressure  
Sea Level Pressure 30.04 in    
Wind  
Wind Speed 7 mph (ESE)    
Max Wind Speed 17 mph    
Max Gust Speed 22 mph    
Visibility 6 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Dec. 16, 2012 Rise Set
Actual Time 7:19 AM PST 4:50 PM PST
Civil Twilight 6:49 AM PST 5:20 PM PST
Nautical Twilight 6:16 AM PST 5:53 PM PST
Astronomical Twilight 5:44 AM PST 6:25 PM PST
Moon 9:59 AM PST (12/16) 9:07 PM PST (12/16)
Length of Visible Light 10h 30m
Length of Day
9h 31m
Waxing Crescent, 17% of the Moon is Illuminated
Dec 16
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
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 45.0 °F 42.6 °F 41.0 °F 86% 30.04 in 10.0 mi Variable 4.6 mph - N/A   Overcast
1:03 AM 46.4 °F 41.5 °F 39.2 °F 76% 30.06 in 10.0 mi East 10.4 mph - N/A   Overcast
1:54 AM 46.0 °F 41.4 °F 39.0 °F 76% 30.05 in 10.0 mi East 9.2 mph - N/A   Overcast
2:11 AM 46.4 °F 41.5 °F 39.2 °F 76% 30.08 in 10.0 mi East 10.4 mph - N/A   Overcast
2:54 AM 45.0 °F 40.1 °F 41.0 °F 86% 30.05 in 6.0 mi East 9.2 mph - N/A   Overcast
3:54 AM 45.0 °F 40.1 °F 39.9 °F 82% 30.05 in 10.0 mi ENE 9.2 mph - N/A   Overcast
5:15 AM 44.6 °F 41.4 °F 42.8 °F 93% 30.08 in 10.0 mi NNE 5.8 mph - N/A   Overcast
5:50 AM 44.6 °F 42.2 °F 42.8 °F 93% 30.08 in 6.0 mi NNE 4.6 mph - N/A   Overcast
5:54 AM 45.0 °F 43.5 °F 42.1 °F 90% 30.06 in 6.0 mi North 3.5 mph - N/A   Overcast
6:54 AM 45.0 °F 43.5 °F 42.1 °F 90% 30.06 in 10.0 mi North 3.5 mph - N/A   Overcast
7:54 AM 45.0 °F 43.5 °F 42.1 °F 90% 30.07 in 10.0 mi North 3.5 mph - N/A   Overcast
8:54 AM 48.0 °F - 42.1 °F 80% 30.08 in 10.0 mi East 5.8 mph - N/A   Overcast
9:54 AM 50.0 °F - 42.1 °F 74% 30.09 in 10.0 mi East 10.4 mph - N/A   Mostly Cloudy
10:54 AM 48.9 °F - 42.1 °F 77% 30.09 in 8.0 mi East 11.5 mph - N/A   Overcast
11:54 AM 51.1 °F - 44.1 °F 77% 30.07 in 8.0 mi East 9.2 mph - N/A   Overcast
12:54 PM 51.1 °F - 44.1 °F 77% 30.06 in 8.0 mi East 3.5 mph - N/A   Overcast
1:11 PM 50.0 °F - 44.6 °F 82% 30.08 in 4.0 mi ESE 5.8 mph - N/A   Haze
1:26 PM 50.0 °F - 44.6 °F 82% 30.06 in 2.0 mi ESE 9.2 mph - N/A   Haze
1:46 PM 50.0 °F - 44.6 °F 82% 30.05 in 2.0 mi ESE 8.1 mph - N/A   Haze
1:54 PM 51.1 °F - 46.0 °F 83% 30.02 in 2.0 mi East 8.1 mph - N/A   Haze
2:12 PM 51.8 °F - 44.6 °F 76% 30.04 in 2.0 mi East 10.4 mph - N/A   Haze
2:17 PM 51.8 °F - 44.6 °F 76% 30.04 in 3.0 mi East 8.1 mph - N/A   Haze
2:54 PM 50.0 °F - 44.1 °F 80% 30.01 in 3.0 mi East 9.2 mph - N/A   Haze
3:26 PM 50.0 °F - 44.6 °F 82% 30.03 in 7.0 mi East 10.4 mph - N/A   Overcast
3:54 PM 50.0 °F - 45.0 °F 83% 30.01 in 7.0 mi East 6.9 mph - N/A   Overcast
4:54 PM 50.0 °F - 45.0 °F 83% 30.00 in 1.0 mi East 8.1 mph - N/A   Haze
5:03 PM 50.0 °F - 46.4 °F 87% 30.03 in 1.5 mi East 6.9 mph - 0.00 in Rain Light Rain
5:54 PM 50.0 °F - 46.9 °F 89% 30.01 in 1.5 mi East 6.9 mph - 0.01 in Rain Light Rain
6:18 PM 50.0 °F - 48.2 °F 94% 30.03 in 1.5 mi East 4.6 mph - 0.01 in Rain Light Rain
6:52 PM 50.0 °F - 48.2 °F 94% 30.03 in 2.0 mi Calm Calm - 0.01 in Rain Light Rain
6:54 PM 50.0 °F - 48.9 °F 96% 30.01 in 2.0 mi SE 3.5 mph - 0.01 in Rain Light Rain
7:14 PM 51.8 °F - 50.0 °F 94% 30.03 in 3.0 mi SE 6.9 mph - 0.00 in   Overcast
7:54 PM 53.1 °F - 51.1 °F 93% 30.01 in 5.0 mi Variable 3.5 mph - 0.00 in   Overcast
8:13 PM 53.6 °F - 50.0 °F 88% 30.02 in 4.0 mi SSE 6.9 mph - N/A   Overcast
8:54 PM 53.1 °F - 50.0 °F 89% 30.01 in 10.0 mi South 3.5 mph - N/A   Overcast
9:25 PM 51.8 °F - 50.0 °F 94% 30.02 in 6.0 mi South 4.6 mph - N/A   Overcast
9:54 PM 54.0 °F - 51.1 °F 90% 29.99 in 10.0 mi South 6.9 mph - N/A   Overcast
10:54 PM 55.0 °F - 51.1 °F 86% 29.99 in 10.0 mi South 10.4 mph - N/A   Overcast
11:49 PM 53.6 °F - 51.8 °F 94% 30.00 in 10.0 mi South 16.1 mph - N/A   Overcast
11:54 PM 54.0 °F - 51.1 °F 90% 29.98 in 10.0 mi South 15.0 mph - N/A   Overcast