Weather History for KVSF - December, 2012

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Monday, December 3, 2012

  Actual Average Record
Temperature  
Mean Temperature 40 °F 30 °F  
Max Temperature 51 °F 39 °F 55 °F (1998)
Min Temperature 29 °F 22 °F 3 °F (2003)
Degree Days  
Heating Degree Days 25 35  
Month to date heating degree days 98 103  
Since 1 July heating degree days 1435 1746  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 345  
Moisture  
Dew Point 34 °F    
Average Humidity 78    
Maximum Humidity 100    
Minimum Humidity 56    
Precipitation  
Precipitation 0.00 in 0.12 in 0.79 in (2007)
Month to date precipitation 0.14 0.35  
Year to date precipitation 30.64 40.93  
Sea Level Pressure  
Sea Level Pressure 30.15 in    
Wind  
Wind Speed 3 mph (WNW)    
Max Wind Speed 16 mph    
Max Gust Speed 22 mph    
Visibility 5 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 03, 2012 Rise Set
Actual Time 7:05 AM EST 4:14 PM EST
Civil Twilight 6:33 AM EST 4:46 PM EST
Nautical Twilight 5:57 AM EST 5:22 PM EST
Astronomical Twilight 5:23 AM EST 5:56 PM EST
Moon 9:03 PM EST (12/3) 10:23 AM EST (12/3)
Length of Visible Light 10h 13m
Length of Day
9h 09m
Waning Gibbous, 78% of the Moon is Illuminated
Dec 3
Waning Gibbous
Dec 6
Last Quarter
Dec 13
New
Dec 20
First Quarter
Dec 28
Full

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:11 AM 35.6 °F - 35.6 °F 100% 29.99 in 2.5 mi Calm Calm - N/A   Overcast
12:30 AM 35.6 °F - 35.6 °F 100% 29.99 in 3.0 mi Calm Calm - N/A   Overcast
12:54 AM 37.0 °F - 36.0 °F 96% 30.01 in 3.0 mi Calm Calm - N/A   Overcast
1:47 AM 37.4 °F - 35.6 °F 93% 29.99 in 2.0 mi Calm Calm - N/A   Overcast
1:54 AM 37.0 °F - 37.0 °F 100% 30.01 in 1.8 mi Calm Calm - N/A   Overcast
2:03 AM 37.4 °F - 37.4 °F 100% 29.99 in 1.2 mi Calm Calm - N/A   Overcast
2:17 AM 37.4 °F - 37.4 °F 100% 30.00 in 2.0 mi Calm Calm - N/A   Overcast
2:54 AM 37.0 °F 34.5 °F 36.0 °F 96% 30.02 in 1.8 mi SSW 3.5 mph - N/A   Overcast
3:12 AM 37.4 °F - 35.6 °F 93% 30.00 in 2.0 mi Calm Calm - N/A   Overcast
3:34 AM 39.2 °F - 39.2 °F 100% 30.00 in 1.2 mi Calm Calm - N/A   Overcast
3:54 AM 37.0 °F - 37.0 °F 100% 30.03 in 0.8 mi Calm Calm - N/A   Overcast
4:02 AM 37.4 °F - 37.4 °F 100% 30.01 in 1.0 mi Calm Calm - N/A   Overcast
4:20 AM 37.4 °F - 35.6 °F 93% 30.01 in 0.5 mi Calm Calm - N/A Fog Fog
4:40 AM 37.4 °F - 37.4 °F 100% 30.03 in 1.5 mi Calm Calm - N/A   Mostly Cloudy
4:45 AM 37.4 °F - 37.4 °F 100% 30.02 in 3.0 mi Calm Calm - N/A   Overcast
4:54 AM 37.0 °F 33.3 °F 36.0 °F 96% 30.05 in 3.0 mi Variable 4.6 mph - N/A   Overcast
5:54 AM 39.9 °F 36.7 °F 39.0 °F 97% 30.07 in 6.0 mi East 4.6 mph - N/A   Overcast
6:36 AM 48.2 °F - 39.2 °F 71% 30.08 in 10.0 mi WNW 9.2 mph 16.1 mph N/A   Mostly Cloudy
6:54 AM 46.9 °F - 39.9 °F 77% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:54 AM 42.1 °F - 41.0 °F 96% 30.13 in 8.0 mi Calm Calm - N/A   Overcast
8:46 AM 46.4 °F - 39.2 °F 76% 30.13 in 9.0 mi Calm Calm - N/A   Overcast
8:54 AM 46.9 °F - 39.0 °F 74% 30.15 in 10.0 mi West 4.6 mph - N/A   Overcast
9:10 AM 48.2 °F - 37.4 °F 66% 30.15 in 10.0 mi NW 4.6 mph - N/A   Overcast
9:54 AM 48.0 °F - 39.0 °F 71% 30.18 in 10.0 mi WNW 5.8 mph - N/A   Overcast
10:54 AM 48.9 °F - 39.0 °F 69% 30.19 in 10.0 mi North 4.6 mph - N/A   Overcast
11:01 AM 48.2 °F - 37.4 °F 66% 30.17 in 10.0 mi Variable 3.5 mph - N/A   Overcast
11:22 AM 48.2 °F - 37.4 °F 66% 30.18 in 10.0 mi West 6.9 mph - N/A   Overcast
11:54 AM 48.9 °F - 37.0 °F 64% 30.20 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
12:54 PM 50.0 °F - 35.1 °F 57% 30.20 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
1:54 PM 48.9 °F - 35.1 °F 59% 30.21 in 10.0 mi Variable 5.8 mph 17.3 mph N/A   Clear
2:54 PM 48.0 °F - 34.0 °F 58% 30.21 in 10.0 mi NW 5.8 mph - N/A   Partly Cloudy
3:54 PM 45.0 °F 43.5 °F 34.0 °F 65% 30.22 in 10.0 mi NNE 3.5 mph - N/A   Clear
4:54 PM 37.9 °F - 35.1 °F 89% 30.23 in 10.0 mi Calm Calm - N/A   Clear
5:54 PM 34.0 °F - 32.0 °F 92% 30.26 in 10.0 mi Calm Calm - N/A   Clear
6:54 PM 30.0 °F - 28.0 °F 92% 30.27 in 6.0 mi Calm Calm - N/A   Clear
7:01 PM 30.2 °F - 28.4 °F 93% 30.26 in 6.0 mi Calm Calm - N/A   Partly Cloudy
7:42 PM 30.2 °F - 28.4 °F 93% 30.28 in 1.8 mi Calm Calm - N/A   Scattered Clouds
7:45 PM 30.2 °F - 28.4 °F 93% 30.28 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
7:54 PM 30.0 °F - 28.9 °F 96% 30.30 in 6.0 mi Calm Calm - N/A   Mostly Cloudy
8:02 PM 30.2 °F - 28.4 °F 93% 30.28 in 6.0 mi Calm Calm - N/A   Scattered Clouds
8:15 PM 30.2 °F - 28.4 °F 93% 30.28 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
8:54 PM 30.9 °F - 28.9 °F 92% 30.30 in 5.0 mi Calm Calm - N/A   Overcast
9:54 PM 30.9 °F - 30.0 °F 96% 30.31 in 6.0 mi Calm Calm - N/A   Overcast
10:54 PM 30.9 °F - 28.9 °F 92% 30.30 in 4.0 mi Calm Calm - N/A   Overcast
11:31 PM 30.2 °F - 28.4 °F 93% 30.28 in 1.5 mi Calm Calm - N/A   Scattered Clouds
11:35 PM 28.4 °F - 26.6 °F 93% 30.29 in 0.8 mi Calm Calm - N/A   Mostly Cloudy
11:46 PM 28.4 °F - 26.6 °F 93% 30.29 in 0.5 mi Calm Calm - N/A Fog Light Freezing Fog
11:54 PM 28.9 °F - 27.0 °F 92% 30.31 in 1.2 mi Calm Calm - N/A   Mostly Cloudy