History for San Francisco, CA

Thursday, December 13, 2012 — View Current Conditions
Thursday, December 13, 2012
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Daily Weekly Monthly Custom
  Actual Average Record
Temperature
Mean Temperature 48 °F 51 °F  
Max Temperature 54 °F 57 °F 69 °F (1958)
Min Temperature 42 °F 45 °F 30 °F (1972)
Degree Days
Heating Degree Days 17 14  
Month to date heating degree days 128 176  
Since 1 July heating degree days 723 740  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 86 164  
Moisture
Dew Point 38 °F    
Average Humidity 64    
Maximum Humidity 82    
Minimum Humidity 46    
Precipitation
Precipitation 0.00 in 0.12 in 2.47 in (2002)
Month to date precipitation 2.34 1.49  
Year to date precipitation 17.56 18.11  
Since 1 July precipitation 7.10 5.03  
Sea Level Pressure
Sea Level Pressure 29.90 in    
Wind
Wind Speed 5 mph (West)    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary
Daily Graph
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Astronomy
May. 19, 2013 Rise Set
Actual Time 7:16 AM PST 4:51 PM PST
Civil Twilight 6:46 AM PST 5:21 PM PST
Nautical Twilight 6:14 AM PST 5:53 PM PST
Astronomical Twilight 5:42 AM PST 6:25 PM PST
Moon 7:30 AM PST (12/13) 5:39 PM PST (12/13)
Length Of Visible Light 10h 34m
Length of Day
9h 35m
New Moon, 0% of the Moon is Illuminated
Dec 13
New Moon
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
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Hourly Observations
Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 46.4 °F 44.3 °F 39.2 °F 76% 29.90 in 10.0 mi NW 4.6 mph - N/A   Partly Cloudy
1:56 AM 44.1 °F 42.5 °F 37.9 °F 79% 29.91 in 10.0 mi WSW 3.5 mph - N/A   Partly Cloudy
2:56 AM 44.1 °F 42.5 °F 37.9 °F 79% 29.91 in 10.0 mi SW 3.5 mph - N/A   Partly Cloudy
3:56 AM 42.1 °F 40.2 °F 37.9 °F 85% 29.90 in 10.0 mi SW 3.5 mph - N/A   Scattered Clouds
4:18 AM 42.8 °F 41.1 °F 37.4 °F 81% 29.89 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
4:34 AM 42.8 °F 41.1 °F 37.4 °F 81% 29.89 in 10.0 mi WSW 3.5 mph - N/A   Scattered Clouds
4:56 AM 42.1 °F 40.2 °F 37.0 °F 82% 29.90 in 10.0 mi West 3.5 mph - N/A   Partly Cloudy
5:56 AM 42.1 °F 40.2 °F 37.9 °F 85% 29.90 in 10.0 mi SSW 3.5 mph - N/A   Partly Cloudy
6:56 AM 43.0 °F - 37.9 °F 82% 29.92 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:56 AM 48.0 °F - 37.9 °F 68% 29.93 in 10.0 mi ENE 10.4 mph - N/A   Mostly Cloudy
8:56 AM 48.9 °F - 39.0 °F 69% 29.93 in 10.0 mi NE 6.9 mph - N/A   Partly Cloudy
9:56 AM 50.0 °F - 39.0 °F 66% 29.94 in 10.0 mi NE 5.8 mph - N/A   Partly Cloudy
10:56 AM 50.0 °F - 39.0 °F 66% 29.93 in 10.0 mi NE 4.6 mph - N/A   Scattered Clouds
11:56 AM 52.0 °F - 39.9 °F 63% 29.90 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:56 PM 53.1 °F - 39.0 °F 59% 29.88 in 10.0 mi North 5.8 mph - N/A   Scattered Clouds
1:56 PM 54.0 °F - 37.9 °F 55% 29.87 in 10.0 mi North 6.9 mph - N/A   Partly Cloudy
4:56 PM 51.1 °F - 36.0 °F 56% 29.87 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
5:56 PM 50.0 °F - 37.0 °F 61% 29.87 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
6:56 PM 48.9 °F - 37.0 °F 64% 29.88 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
7:56 PM 48.0 °F - 37.0 °F 66% 29.87 in 10.0 mi WNW 6.9 mph - N/A   Clear
8:56 PM 48.0 °F - 37.9 °F 68% 29.87 in 10.0 mi West 5.8 mph - N/A   Clear
9:56 PM 48.0 °F - 37.9 °F 68% 29.88 in 10.0 mi Calm Calm - N/A   Clear
10:56 PM 46.0 °F - 39.0 °F 76% 29.88 in 10.0 mi Calm Calm - N/A   Clear
11:56 PM 46.0 °F 43.9 °F 39.9 °F 79% 29.87 in 10.0 mi SSW 4.6 mph - N/A   Clear
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