Weather History for San Francisco, CA

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Wednesday, February 13, 2013

  Actual Average Record
Temperature  
Mean Temperature 50 °F 53 °F  
Max Temperature 59 °F 59 °F 70 °F (1996)
Min Temperature 41 °F 46 °F 32 °F (1946)
Degree Days  
Heating Degree Days 15 12  
Month to date heating degree days 193 166  
Since 1 July heating degree days 1688 1633  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 43 °F    
Average Humidity 75    
Maximum Humidity 93    
Minimum Humidity 57    
Precipitation  
Precipitation 0.00 in 0.15 in 2.21 in (1979)
Month to date precipitation 0.25 1.92  
Year to date precipitation 0.45 6.11  
Since 1 July precipitation 11.45 13.68  
Sea Level Pressure  
Sea Level Pressure 30.30 in    
Wind  
Wind Speed 6 mph (WNW)    
Max Wind Speed 20 mph    
Max Gust Speed 22 mph    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 13, 2013 Rise Set
Actual Time 7:00 AM PST 5:47 PM PST
Civil Twilight 6:33 AM PST 6:13 PM PST
Nautical Twilight 6:03 AM PST 6:44 PM PST
Astronomical Twilight 5:32 AM PST 7:15 PM PST
Moon 8:38 AM PST (2/13) 9:49 PM PST (2/13)
Length of Visible Light 11h 39m
Length of Day
10h 46m
Waxing Crescent, 14% of the Moon is Illuminated
Feb 13
Waxing Crescent
Feb 17
First Quarter
Feb 25
Full
Mar 4
Last Quarter
Mar 11
New

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 48.0 °F - 44.1 °F 86% 30.34 in 9.0 mi West 6.9 mph - N/A   Clear
1:56 AM 46.0 °F 44.8 °F 41.0 °F 83% 30.34 in 10.0 mi South 3.5 mph - N/A   Clear
2:56 AM 43.0 °F - 37.9 °F 82% 30.34 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:56 AM 42.1 °F - 36.0 °F 79% 30.33 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:56 AM 41.0 °F 39.0 °F 36.0 °F 82% 30.33 in 10.0 mi West 3.5 mph - N/A   Partly Cloudy
5:56 AM 41.0 °F 39.0 °F 35.1 °F 79% 30.33 in 10.0 mi West 3.5 mph - N/A   Partly Cloudy
6:47 AM 42.8 °F 40.1 °F 37.4 °F 81% 30.33 in 9.0 mi West 4.6 mph - N/A   Scattered Clouds
6:56 AM 43.0 °F 40.3 °F 39.9 °F 89% 30.33 in 4.0 mi West 4.6 mph - N/A   Scattered Clouds
7:56 AM 45.0 °F 41.8 °F 42.1 °F 90% 30.35 in 5.0 mi West 5.8 mph - N/A   Partly Cloudy
8:25 AM 46.4 °F - 44.6 °F 93% 30.35 in 5.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 46.9 °F - 44.1 °F 90% 30.35 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
9:44 AM 48.2 °F - 44.6 °F 87% 30.35 in 3.0 mi Calm Calm - N/A   Scattered Clouds
9:56 AM 50.0 °F - 45.0 °F 83% 30.35 in 3.0 mi NNE 3.5 mph - N/A   Haze
10:56 AM 51.1 °F - 45.0 °F 80% 30.35 in 5.0 mi North 4.6 mph - N/A   Haze
11:56 AM 52.0 °F - 45.0 °F 77% 30.33 in 4.0 mi NNE 3.5 mph - N/A   Haze
12:56 PM 52.0 °F - 46.0 °F 80% 30.30 in 4.0 mi NNE 4.6 mph - N/A   Haze
1:56 PM 55.9 °F - 46.9 °F 72% 30.27 in 5.0 mi NW 6.9 mph - N/A   Haze
2:56 PM 59.0 °F - 45.0 °F 60% 30.26 in 9.0 mi WNW 9.2 mph - N/A   Partly Cloudy
3:56 PM 57.0 °F - 43.0 °F 59% 30.25 in 10.0 mi WNW 11.5 mph - N/A   Partly Cloudy
4:56 PM 52.0 °F - 42.1 °F 69% 30.24 in 10.0 mi WNW 15.0 mph - N/A   Partly Cloudy
5:56 PM 50.0 °F - 44.1 °F 80% 30.23 in 10.0 mi WNW 12.7 mph - N/A   Partly Cloudy
6:56 PM 50.0 °F - 45.0 °F 83% 30.23 in 10.0 mi WNW 12.7 mph - N/A   Partly Cloudy
7:56 PM 50.0 °F - 44.1 °F 80% 30.23 in 10.0 mi WNW 12.7 mph - N/A   Partly Cloudy
8:56 PM 48.9 °F - 45.0 °F 86% 30.24 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
9:56 PM 48.9 °F - 44.1 °F 83% 30.24 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
10:56 PM 48.0 °F - 44.1 °F 86% 30.24 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
11:56 PM 46.0 °F 43.9 °F 43.0 °F 89% 30.24 in 10.0 mi WNW 4.6 mph - N/A   Partly Cloudy