Weather History for KSFO - March, 2012

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Monday, March 19, 2012

  Actual Average Record
Temperature  
Mean Temperature 50 °F 55 °F  
Max Temperature 56 °F 62 °F 78 °F (2010)
Min Temperature 43 °F 48 °F 39 °F (1965)
Degree Days  
Heating Degree Days 15 10  
Month to date heating degree days 229 197  
Since 1 July heating degree days 2140 2003  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 32 °F    
Average Humidity 50    
Maximum Humidity 65    
Minimum Humidity 35    
Precipitation  
Precipitation 0.00 in 0.09 in 1.05 in (2011)
Month to date precipitation 2.21 2.04  
Year to date precipitation 5.03 10.29  
Since 1 July precipitation 7.90  
Sea Level Pressure  
Sea Level Pressure 30.03 in    
Wind  
Wind Speed 6 mph (NW)    
Max Wind Speed 13 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Mar. 19, 2012 Rise Set
Actual Time 7:13 AM PDT 7:20 PM PDT
Civil Twilight 6:47 AM PDT 7:47 PM PDT
Nautical Twilight 6:17 AM PDT 8:17 PM PDT
Astronomical Twilight 5:46 AM PDT 8:48 PM PDT
Moon 5:25 AM PDT (3/19) 4:56 PM PDT (3/19)
Length of Visible Light 12h 59m
Length of Day
12h 07m
Waning Crescent, 8% of the Moon is Illuminated
Mar 19
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 41.9 °F 33.1 °F 61% 29.97 in 10.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
1:56 AM 44.6 °F 39.7 °F 33.8 °F 66% 29.96 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
2:56 AM 45.0 °F 39.7 °F 28.9 °F 53% 29.97 in 10.0 mi West 10.4 mph - N/A   Mostly Cloudy
3:56 AM 44.1 °F 39.5 °F 30.9 °F 60% 29.97 in 10.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
4:56 AM 44.1 °F 40.1 °F 32.0 °F 63% 29.97 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy
5:56 AM 43.0 °F 41.3 °F 30.0 °F 60% 29.98 in 10.0 mi WNW 3.5 mph - N/A   Partly Cloudy
6:56 AM 44.1 °F 41.5 °F 28.9 °F 55% 30.00 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
7:56 AM 46.4 °F 44.3 °F 30.2 °F 53% 30.01 in 10.0 mi North 4.6 mph - N/A   Mostly Cloudy
8:56 AM 46.0 °F 43.1 °F 34.0 °F 63% 30.04 in 10.0 mi NNE 5.8 mph - N/A   Mostly Cloudy
9:56 AM 46.0 °F - 33.1 °F 61% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:56 AM 48.0 °F - 32.0 °F 54% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:56 AM 48.0 °F - 33.1 °F 56% 30.06 in 10.0 mi NE 6.9 mph - N/A   Mostly Cloudy
12:56 PM 50.0 °F - 32.0 °F 50% 30.06 in 10.0 mi ENE 5.8 mph - N/A   Mostly Cloudy
1:56 PM 52.0 °F - 32.0 °F 47% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 PM 55.0 °F - 28.0 °F 35% 30.04 in 10.0 mi NNW 5.8 mph - N/A   Mostly Cloudy
3:56 PM 55.0 °F - 32.0 °F 42% 30.04 in 10.0 mi NNE 4.6 mph - N/A   Mostly Cloudy
4:56 PM 55.0 °F - 34.0 °F 45% 30.04 in 10.0 mi West 10.4 mph - N/A   Mostly Cloudy
5:56 PM 53.1 °F - 32.0 °F 45% 30.04 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
6:56 PM 51.1 °F - 30.9 °F 46% 30.06 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
7:56 PM 50.0 °F - 32.0 °F 50% 30.06 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
8:56 PM 50.0 °F - 30.9 °F 48% 30.08 in 10.0 mi WNW 6.9 mph - N/A   Overcast
9:56 PM 50.0 °F - 30.0 °F 46% 30.09 in 10.0 mi West 6.9 mph - N/A   Overcast
10:56 PM 50.0 °F - 34.0 °F 54% 30.09 in 10.0 mi WNW 8.1 mph - N/A   Overcast
11:56 PM 50.0 °F - 33.1 °F 52% 30.12 in 10.0 mi WNW 6.9 mph - N/A   Overcast