Napa County, CA

11:54 PM PDT on June 26, 2017 (GMT -0700)
Napa County

Weather History for KAPC - December, 2012

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Monday, December 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 50 °F 45 °F  
Max Temperature 60 °F 55 °F 66 °F (2000)
Min Temperature 40 °F 36 °F 24 °F (2008)
Degree Days  
Heating Degree Days 15    
Month to date heating degree days 263  
Since 1 July heating degree days 835  
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 93    
Minimum Humidity 72    
Precipitation  
Precipitation 0.02 in - 1.36 in (1987)
Month to date precipitation 1.85  
Year to date precipitation 19.23  
Since 1 July precipitation 5.46  
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 9 mph (WSW)    
Max Wind Speed 23 mph    
Max Gust Speed 29 mph    
Visibility 9 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. 17, 2012 Rise Set
Actual Time 7:20 AM PST 4:50 PM PST
Civil Twilight 6:50 AM PST 5:20 PM PST
Nautical Twilight 6:17 AM PST 5:53 PM PST
Astronomical Twilight 5:45 AM PST 6:25 PM PST
Moon 10:35 AM PST (12/17) 10:14 PM PST (12/17)
Length of Visible Light 10h 30m
Length of Day
9h 30m
Waxing Crescent, 26% of the Moon is Illuminated
Dec 17
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
12:20 AM 53.6 °F - 51.8 °F 94% 30.00 in 7.0 mi South 13.8 mph - N/A   Overcast
12:54 AM 53.1 °F - 52.0 °F 96% 29.96 in 5.0 mi SSW 16.1 mph - 0.00 in Rain Light Rain
1:39 AM 53.6 °F - 51.8 °F 94% 29.99 in 4.0 mi SSW 13.8 mph - 0.00 in   Overcast
1:54 AM 54.0 °F - 52.0 °F 93% 29.97 in 4.0 mi SSW 15.0 mph - 0.00 in Rain Light Rain
2:54 AM 55.0 °F - 53.1 °F 93% 29.96 in 7.0 mi SSW 20.7 mph - 0.00 in Rain Light Rain
3:35 AM 55.4 °F - 53.6 °F 94% 29.97 in 10.0 mi SSW 16.1 mph - 0.00 in   Overcast
3:54 AM 55.0 °F - 53.1 °F 93% 29.95 in 8.0 mi SSW 16.1 mph - 0.00 in   Overcast
4:54 AM 55.9 °F - 54.0 °F 93% 29.94 in 10.0 mi SSW 13.8 mph - N/A   Overcast
5:54 AM 55.0 °F - 53.1 °F 93% 29.96 in 3.0 mi WSW 15.0 mph 21.9 mph 0.02 in Rain Rain
6:35 AM 53.6 °F - 51.8 °F 94% 30.00 in 10.0 mi WSW 6.9 mph - 0.00 in   Overcast
6:54 AM 54.0 °F - 52.0 °F 93% 29.98 in 10.0 mi West 5.8 mph - 0.00 in   Overcast
7:54 AM 53.1 °F - 52.0 °F 96% 29.99 in 10.0 mi Calm Calm - 0.00 in   Overcast
7:57 AM 53.6 °F - 51.8 °F 94% 30.01 in 10.0 mi West 4.6 mph - N/A   Overcast
8:13 AM 53.6 °F - 51.8 °F 94% 30.02 in 8.0 mi West 10.4 mph - 0.00 in Rain Light Rain
8:33 AM 53.6 °F - 51.8 °F 94% 30.02 in 7.0 mi WNW 8.1 mph - 0.00 in Rain Light Rain
8:54 AM 54.0 °F - 51.1 °F 90% 30.01 in 10.0 mi WSW 6.9 mph - 0.00 in   Overcast
9:54 AM 55.0 °F - 51.1 °F 86% 30.03 in 10.0 mi WSW 6.9 mph - N/A   Overcast
10:54 AM 57.9 °F - 50.0 °F 75% 30.01 in 10.0 mi West 10.4 mph - N/A   Mostly Cloudy
11:54 AM 57.9 °F - 51.1 °F 78% 30.00 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
12:54 PM 57.9 °F - 50.0 °F 75% 29.99 in 10.0 mi West 10.4 mph - N/A   Overcast
1:54 PM 57.0 °F - 48.9 °F 74% 29.96 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
4:54 PM 53.1 °F - 46.0 °F 77% 29.94 in 10.0 mi WSW 10.4 mph - N/A   Scattered Clouds
5:54 PM 50.0 °F - 45.0 °F 83% 29.95 in 10.0 mi SW 6.9 mph - N/A   Scattered Clouds
6:54 PM 48.9 °F - 44.1 °F 83% 29.95 in 10.0 mi West 8.1 mph - N/A   Clear
7:54 PM 45.0 °F 42.6 °F 42.1 °F 90% 29.96 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
8:54 PM 45.0 °F 41.2 °F 39.9 °F 82% 29.96 in 10.0 mi West 6.9 mph - N/A   Clear
9:54 PM 39.9 °F 36.7 °F 37.0 °F 89% 29.96 in 10.0 mi WNW 4.6 mph - N/A   Clear
10:54 PM 45.0 °F 41.8 °F 41.0 °F 86% 29.98 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
11:54 PM 42.1 °F 38.4 °F 39.9 °F 92% 29.98 in 10.0 mi NW 5.8 mph - N/A   Scattered Clouds