Napa County, CA

1:21 PM PDT on June 26, 2017 (GMT -0700)
Napa County

Weather History for KAPC - December, 2010

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Wednesday, December 22, 2010

  Actual Average Record
Temperature  
Mean Temperature 51 °F 45 °F  
Max Temperature 58 °F 55 °F 68 °F (1999)
Min Temperature 43 °F 36 °F 19 °F (1998)
Degree Days  
Heating Degree Days 14    
Month to date heating degree days 299  
Since 1 July heating degree days 1055  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 189  
Moisture  
Dew Point 49 °F    
Average Humidity 88    
Maximum Humidity 96    
Minimum Humidity 80    
Precipitation  
Precipitation 0.38 in - 3.45 in (1955)
Month to date precipitation 5.20  
Year to date precipitation 26.96  
Since 1 July precipitation 9.62  
Sea Level Pressure  
Sea Level Pressure 29.78 in    
Wind  
Wind Speed 5 mph (ESE)    
Max Wind Speed 13 mph    
Max Gust Speed 16 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. 22, 2010 Rise Set
Actual Time 7:22 AM PST 4:53 PM PST
Civil Twilight 6:53 AM PST 5:22 PM PST
Nautical Twilight 6:19 AM PST 5:55 PM PST
Astronomical Twilight 5:47 AM PST 6:28 PM PST
Moon 6:41 PM PST (12/22) 8:30 AM PST (12/22)
Length of Visible Light 10h 29m
Length of Day
9h 30m
Full, 97% of the Moon is Illuminated
Dec 22
Full
Dec 27
Last Quarter
Jan 4
New
Jan 12
First Quarter
Jan 19
Full

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 52.0 °F - 48.9 °F 89% 29.67 in 9.0 mi ESE 6.9 mph - 0.08 in Rain Light Rain
1:54 AM 51.1 °F - 50.0 °F 96% 29.67 in 7.0 mi SE 4.6 mph - 0.08 in Rain Rain
2:15 AM 51.8 °F - 50.0 °F 94% 29.70 in 7.0 mi East 9.2 mph - 0.03 in Rain Rain
2:23 AM 51.8 °F - 50.0 °F 94% 29.70 in 5.0 mi ESE 6.9 mph - 0.06 in Rain Rain
2:54 AM 51.1 °F - 50.0 °F 96% 29.68 in 5.0 mi East 5.8 mph - 0.13 in Rain Rain
3:15 AM 51.8 °F - 50.0 °F 94% 29.70 in 5.0 mi Calm Calm - 0.05 in Rain Rain
3:37 AM 51.8 °F - 50.0 °F 94% 29.69 in 7.0 mi East 6.9 mph - 0.07 in Rain Light Rain
3:54 AM 52.0 °F - 50.0 °F 93% 29.67 in 10.0 mi East 8.1 mph - 0.08 in Rain Light Rain
4:44 AM 51.8 °F - 50.0 °F 94% 29.68 in 9.0 mi East 9.2 mph - 0.01 in Rain Light Rain
4:54 AM 52.0 °F - 50.0 °F 93% 29.66 in 8.0 mi East 9.2 mph - 0.01 in Rain Light Rain
5:54 AM 52.0 °F - 50.0 °F 93% 29.67 in 9.0 mi East 8.1 mph - 0.01 in   Overcast
6:54 AM 52.0 °F - 50.0 °F 93% 29.68 in 10.0 mi East 10.4 mph - N/A   Overcast
7:54 AM 52.0 °F - 50.0 °F 93% 29.70 in 10.0 mi ENE 6.9 mph - N/A   Overcast
8:54 AM 52.0 °F - 50.0 °F 93% 29.73 in 9.0 mi ENE 3.5 mph - N/A   Overcast
9:54 AM 53.1 °F - 51.1 °F 93% 29.75 in 6.0 mi ENE 4.6 mph - N/A   Overcast
10:27 AM 55.4 °F - 51.8 °F 88% 29.79 in 10.0 mi NE 5.8 mph - N/A   Overcast
10:50 AM 55.4 °F - 51.8 °F 88% 29.79 in 10.0 mi ENE 4.6 mph - N/A   Overcast
10:54 AM 55.0 °F - 51.1 °F 86% 29.76 in 10.0 mi East 4.6 mph - N/A   Overcast
11:54 AM 55.9 °F - 51.1 °F 84% 29.76 in 10.0 mi Calm Calm - N/A   Overcast
1:54 PM 57.0 °F - 51.1 °F 81% 29.77 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
2:54 PM 55.0 °F - 51.1 °F 86% 29.80 in 10.0 mi SSW 3.5 mph - N/A   Overcast
3:54 PM 55.9 °F - 51.1 °F 84% 29.82 in 10.0 mi West 9.2 mph - N/A   Overcast
4:54 PM 54.0 °F - 50.0 °F 86% 29.84 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy
5:54 PM 52.0 °F - 48.9 °F 89% 29.88 in 10.0 mi WSW 8.1 mph - N/A   Overcast
6:54 PM 51.1 °F - 48.0 °F 89% 29.90 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:54 PM 46.0 °F 44.8 °F 45.0 °F 96% 29.93 in 10.0 mi South 3.5 mph - N/A   Clear
8:54 PM 44.1 °F 42.5 °F 43.0 °F 96% 29.95 in 10.0 mi SSE 3.5 mph - N/A   Clear
9:54 PM 46.0 °F 44.8 °F 44.1 °F 93% 29.98 in 10.0 mi SW 3.5 mph - N/A   Clear
10:54 PM 44.1 °F - 43.0 °F 96% 30.00 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:54 PM 44.1 °F 42.5 °F 42.1 °F 93% 30.02 in 10.0 mi South 3.5 mph - N/A   Clear