San Francisco, CA

8:32 PM PDT on August 31, 2016 (GMT -0700)
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Weather History for KSFO - March, 2012

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Sunday, March 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 48 °F 55 °F  
Max Temperature 52 °F 62 °F 77 °F (2004)
Min Temperature 44 °F 48 °F 37 °F (1973)
Degree Days  
Heating Degree Days 17 10  
Month to date heating degree days 214 187  
Since 1 July heating degree days 2125 1993  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 34 °F    
Average Humidity 62    
Maximum Humidity 76    
Minimum Humidity 48    
Precipitation  
Precipitation T in 0.09 in 0.72 in (1989)
Month to date precipitation 2.21 1.95  
Year to date precipitation 5.03 10.20  
Since 1 July precipitation 7.90  
Sea Level Pressure  
Sea Level Pressure 29.82 in    
Wind  
Wind Speed 22 mph (WNW)    
Max Wind Speed 33 mph    
Max Gust Speed 40 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

Mar. 18, 2012 Rise Set
Actual Time 7:15 AM PDT 7:20 PM PDT
Civil Twilight 6:49 AM PDT 7:46 PM PDT
Nautical Twilight 6:18 AM PDT 8:16 PM PDT
Astronomical Twilight 5:47 AM PDT 8:47 PM PDT
Moon 4:53 AM PDT (3/18) 3:55 PM PDT (3/18)
Length of Visible Light 12h 57m
Length of Day
12h 04m
Waning Crescent, 14% of the Moon is Illuminated
Mar 18
Waning Crescent
Mar 22
New
Mar 30
First Quarter
Apr 6
Full
Apr 13
Last Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 46.0 °F 38.0 °F 34.0 °F 63% 29.67 in 10.0 mi WNW 21.9 mph 31.1 mph N/A   Mostly Cloudy
1:56 AM 46.0 °F 37.8 °F 36.0 °F 68% 29.69 in 10.0 mi West 23.0 mph 36.8 mph N/A   Mostly Cloudy
2:56 AM 45.0 °F 37.4 °F 36.0 °F 71% 29.69 in 10.0 mi WNW 18.4 mph 33.4 mph 0.00 in   Mostly Cloudy
3:56 AM 45.0 °F 36.2 °F 37.0 °F 74% 29.70 in 10.0 mi West 24.2 mph 38.0 mph 0.00 in   Mostly Cloudy
4:56 AM 46.0 °F 36.5 °F 37.0 °F 71% 29.70 in 10.0 mi West 31.1 mph 39.1 mph 0.00 in   Mostly Cloudy
5:56 AM 45.0 °F 36.2 °F 36.0 °F 71% 29.72 in 10.0 mi WNW 24.2 mph 36.8 mph 0.00 in   Mostly Cloudy
6:56 AM 45.0 °F 35.6 °F 36.0 °F 71% 29.73 in 10.0 mi WNW 27.6 mph 34.5 mph 0.00 in   Scattered Clouds
7:56 AM 45.0 °F 36.2 °F 37.9 °F 76% 29.77 in 10.0 mi West 24.2 mph 29.9 mph 0.00 in   Scattered Clouds
8:56 AM 46.9 °F - 36.0 °F 66% 29.78 in 10.0 mi WNW 26.5 mph 33.4 mph N/A   Partly Cloudy
9:56 AM 48.0 °F - 37.9 °F 68% 29.82 in 10.0 mi West 26.5 mph 35.7 mph N/A   Scattered Clouds
10:56 AM 48.9 °F - 37.0 °F 64% 29.84 in 10.0 mi WNW 24.2 mph 33.4 mph N/A   Scattered Clouds
11:56 AM 51.8 °F - 33.8 °F 50% 29.85 in 10.0 mi West 26.5 mph 36.8 mph N/A   Scattered Clouds
12:56 PM 52.0 °F - 33.1 °F 49% 29.86 in 10.0 mi West 26.5 mph 36.8 mph N/A   Scattered Clouds
1:56 PM 51.8 °F - 32.0 °F 47% 29.86 in 10.0 mi West 25.3 mph 36.8 mph N/A   Scattered Clouds
2:56 PM 51.1 °F - 33.1 °F 50% 29.86 in 10.0 mi West 27.6 mph 36.8 mph N/A   Mostly Cloudy
3:56 PM 51.1 °F - 32.0 °F 48% 29.87 in 10.0 mi West 25.3 mph 33.4 mph N/A   Mostly Cloudy
4:56 PM 50.0 °F - 33.1 °F 52% 29.87 in 10.0 mi West 19.6 mph 31.1 mph N/A   Mostly Cloudy
5:56 PM 48.9 °F - 30.9 °F 50% 29.88 in 10.0 mi West 20.7 mph 33.4 mph N/A   Mostly Cloudy
6:56 PM 48.0 °F - 30.9 °F 52% 29.89 in 10.0 mi West 18.4 mph 26.5 mph N/A   Overcast
7:56 PM 46.9 °F - 33.1 °F 59% 29.91 in 10.0 mi WNW 16.1 mph 24.2 mph N/A   Overcast
9:56 PM 46.9 °F - 33.1 °F 59% 29.95 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
10:56 PM 46.9 °F - 30.0 °F 52% 29.96 in 10.0 mi West 16.1 mph 21.9 mph N/A   Mostly Cloudy
11:56 PM 46.0 °F 41.0 °F 34.0 °F 63% 29.97 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy