American Canyon, CA

3:33 PM PDT on August 31, 2016 (GMT -0700)
Napa County

Weather History for KAPC - December, 2011

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Thursday, December 22, 2011

  Actual Average Record
Temperature  
Mean Temperature 45 °F 45 °F  
Max Temperature 65 °F 55 °F 68 °F (1999)
Min Temperature 25 °F 36 °F 19 °F (1998)
Degree Days  
Heating Degree Days 20    
Month to date heating degree days 414  
Since 1 July heating degree days 1084  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 175  
Moisture  
Dew Point 10 °F    
Average Humidity 37    
Maximum Humidity 63    
Minimum Humidity 11    
Precipitation  
Precipitation 0.00 in - 3.45 in (1955)
Month to date precipitation 0.13  
Year to date precipitation 19.40  
Since 1 July precipitation 3.55  
Sea Level Pressure  
Sea Level Pressure 30.29 in    
Wind  
Wind Speed 10 mph (North)    
Max Wind Speed 30 mph    
Max Gust Speed 36 mph    
Visibility 10 miles    
Events      
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, 2011 Rise Set
Actual Time 7:22 AM PST 4:52 PM PST
Civil Twilight 6:52 AM PST 5:22 PM PST
Nautical Twilight 6:19 AM PST 5:55 PM PST
Astronomical Twilight 5:47 AM PST 6:27 PM PST
Moon 5:12 AM PST (12/22) 3:08 PM PST (12/22)
Length of Visible Light 10h 29m
Length of Day
9h 30m
Waning Crescent, 5% of the Moon is Illuminated
Dec 22
Waning Crescent
Dec 24
New
Dec 31
First Quarter
Jan 8
Full
Jan 16
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 48.9 °F - 8.1 °F 19% 30.14 in 10.0 mi North 9.2 mph - N/A   Clear
1:54 AM 51.1 °F - 7.0 °F 17% 30.16 in 10.0 mi North 18.4 mph 25.3 mph N/A   Clear
2:54 AM 51.1 °F - 6.1 °F 16% 30.16 in 10.0 mi North 23.0 mph - N/A   Clear
3:54 AM 52.0 °F - 5.0 °F 15% 30.14 in 10.0 mi North 28.8 mph 35.7 mph N/A   Clear
4:54 AM 51.1 °F - 5.0 °F 15% 30.17 in 10.0 mi North 24.2 mph 32.2 mph N/A   Clear
5:54 AM 50.0 °F - 6.1 °F 17% 30.21 in 10.0 mi North 19.6 mph 26.5 mph N/A   Clear
6:54 AM 46.0 °F 40.6 °F 7.0 °F 20% 30.24 in 10.0 mi NNE 11.5 mph - N/A   Clear
8:54 AM 53.1 °F - 6.1 °F 15% 30.28 in 10.0 mi Calm Calm - N/A   Clear
9:54 AM 57.0 °F - 7.0 °F 14% 30.32 in 10.0 mi West 3.5 mph - N/A   Clear
10:54 AM 61.0 °F - 6.1 °F 11% 30.32 in 10.0 mi NNE 18.4 mph 27.6 mph N/A   Clear
11:54 AM 63.0 °F - 9.0 °F 12% 30.30 in 10.0 mi NNE 13.8 mph - N/A   Clear
12:54 PM 64.0 °F - 8.1 °F 11% 30.29 in 10.0 mi North 13.8 mph - N/A   Clear
1:54 PM 64.0 °F - 8.1 °F 11% 30.27 in 10.0 mi North 16.1 mph - N/A   Clear
2:54 PM 64.9 °F - 10.9 °F 12% 30.28 in 10.0 mi North 9.2 mph - N/A   Clear
3:54 PM 62.1 °F - 12.9 °F 15% 30.31 in 10.0 mi NNE 4.6 mph - N/A   Clear
4:54 PM 52.0 °F - 12.0 °F 20% 30.32 in 10.0 mi Calm Calm - N/A   Clear
6:54 PM 39.9 °F 37.8 °F 19.0 °F 43% 30.38 in 10.0 mi ENE 3.5 mph - N/A   Clear
7:54 PM 35.1 °F - 18.0 °F 50% 30.40 in 10.0 mi Calm Calm - N/A   Clear
8:54 PM 34.0 °F - 19.0 °F 54% 30.41 in 10.0 mi Calm Calm - N/A   Clear
10:54 PM 28.9 °F 25.2 °F 17.1 °F 61% 30.46 in 10.0 mi NW 3.5 mph - N/A   Clear
11:54 PM 27.0 °F 21.6 °F 17.1 °F 66% 30.46 in 10.0 mi NNE 4.6 mph - N/A   Clear