Weather History for KVSF - January, 2013

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Thursday, January 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 27 °F 19 °F  
Max Temperature 36 °F 29 °F 44 °F (1999)
Min Temperature 17 °F 9 °F -17 °F (2009)
Degree Days  
Heating Degree Days 38 46  
Month to date heating degree days 659 771  
Since 1 July heating degree days 3065 3634  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 17 °F    
Average Humidity 68    
Maximum Humidity 96    
Minimum Humidity 39    
Precipitation  
Precipitation 0.21 in 0.09 in 0.93 in (1999)
Month to date precipitation 0.34 1.83  
Year to date precipitation 0.34 1.83  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 4 mph (WNW)    
Max Wind Speed 18 mph    
Max Gust Speed 26 mph    
Visibility 7 miles    
Events Fog , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 17, 2013 Rise Set
Actual Time 7:18 AM EST 4:42 PM EST
Civil Twilight 6:46 AM EST 5:14 PM EST
Nautical Twilight 6:11 AM EST 5:49 PM EST
Astronomical Twilight 5:37 AM EST 6:23 PM EST
Moon 10:11 AM EST (1/17) 11:44 PM EST (1/17)
Length of Visible Light 10h 27m
Length of Day
9h 24m
Waxing Crescent, 37% of the Moon is Illuminated
Jan 17
Waxing Crescent
Jan 18
First Quarter
Jan 26
Full
Feb 3
Last Quarter
Feb 10
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 24.1 °F - 23.0 °F 96% 29.83 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
1:54 AM 23.0 °F - 21.9 °F 96% 29.85 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
2:54 AM 21.9 °F - 19.9 °F 92% 29.84 in 0.2 mi Calm Calm - N/A Fog Light Freezing Fog
3:38 AM 19.4 °F - 17.6 °F 93% 29.80 in 1.2 mi Calm Calm - N/A   Mostly Cloudy
3:42 AM 21.2 °F - 17.6 °F 86% 29.80 in 3.0 mi Calm Calm - N/A   Overcast
3:54 AM 19.9 °F - 17.1 °F 89% 29.83 in 4.0 mi Calm Calm - N/A   Overcast
4:54 AM 24.1 °F - 21.0 °F 88% 29.84 in 10.0 mi Calm Calm - N/A   Overcast
5:54 AM 26.1 °F - 23.0 °F 88% 29.85 in 10.0 mi Calm Calm - N/A   Overcast
6:54 AM 26.1 °F - 23.0 °F 88% 29.87 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:54 AM 27.0 °F 23.0 °F 25.0 °F 92% 29.90 in 10.0 mi Variable 3.5 mph - N/A   Overcast
8:34 AM 28.4 °F 24.6 °F 24.8 °F 86% 29.89 in 1.0 mi Variable 3.5 mph - N/A   Mist
8:43 AM 28.4 °F - 26.6 °F 93% 29.90 in 0.8 mi Calm Calm - 0.05 in Snow Light Snow
8:48 AM 28.4 °F - 24.8 °F 86% 29.90 in 2.5 mi Calm Calm - 0.08 in   Mist
8:54 AM 30.0 °F - 25.0 °F 82% 29.93 in 10.0 mi Calm Calm - 0.08 in   Unknown
9:54 AM 30.9 °F - 27.0 °F 85% 29.94 in 10.0 mi Calm Calm - 0.13 in   Overcast
10:54 AM 34.0 °F 25.5 °F 26.1 °F 73% 29.95 in 10.0 mi West 11.5 mph 17.3 mph 0.00 in   Mostly Cloudy
11:54 AM 36.0 °F 27.1 °F 23.0 °F 59% 29.95 in 10.0 mi West 13.8 mph 17.3 mph N/A   Mostly Cloudy
12:15 PM 33.8 °F 26.4 °F 24.8 °F 70% 29.94 in 1.5 mi West 9.2 mph 20.7 mph 0.00 in Snow Light Snow
12:20 PM 33.8 °F 24.8 °F 26.6 °F 75% 29.95 in 0.8 mi WNW 12.7 mph 19.6 mph 0.00 in Snow Light Snow
12:33 PM 33.8 °F 27.0 °F 24.8 °F 70% 29.96 in 2.0 mi NW 8.1 mph 20.7 mph 0.00 in Snow Light Snow
12:41 PM 33.8 °F 25.8 °F 23.0 °F 65% 29.96 in 9.0 mi WNW 10.4 mph 20.7 mph 0.00 in   Mostly Cloudy
12:54 PM 33.1 °F 24.4 °F 19.9 °F 59% 30.00 in 9.0 mi NW 11.5 mph 26.5 mph 0.00 in   Scattered Clouds
1:54 PM 30.0 °F 22.4 °F 12.9 °F 49% 30.02 in 10.0 mi NW 8.1 mph 20.7 mph N/A   Clear
2:54 PM 28.9 °F 21.9 °F 10.9 °F 47% 30.05 in 10.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
3:54 PM 28.0 °F 21.7 °F 7.0 °F 41% 30.07 in 10.0 mi NW 5.8 mph - N/A   Scattered Clouds
4:54 PM 25.0 °F 18.1 °F 6.1 °F 45% 30.09 in 10.0 mi West 5.8 mph - N/A   Clear
5:54 PM 24.1 °F 19.7 °F 3.9 °F 42% 30.11 in 10.0 mi WNW 3.5 mph - N/A   Clear
6:54 PM 23.0 °F - 3.9 °F 44% 30.13 in 10.0 mi Calm Calm - N/A   Clear
7:54 PM 21.9 °F - 3.9 °F 46% 30.14 in 10.0 mi Calm Calm - N/A   Clear
8:54 PM 21.0 °F 16.2 °F 3.9 °F 48% 30.12 in 10.0 mi NW 3.5 mph - N/A   Clear
9:54 PM 19.9 °F 12.1 °F 1.9 °F 46% 30.12 in 10.0 mi NNW 5.8 mph - N/A   Clear
10:54 PM 18.0 °F 9.8 °F -4.0 °F 38% 30.09 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
11:54 PM 17.1 °F 10.0 °F -5.1 °F 37% 30.09 in 10.0 mi Variable 4.6 mph - N/A   Mostly Cloudy