Weather History for San Francisco, CA

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Wednesday, May 2, 2012

  Actual Average Record
Temperature  
Mean Temperature 53 °F 58 °F  
Max Temperature 58 °F 66 °F 89 °F (2013)
Min Temperature 48 °F 50 °F 42 °F (1954)
Degree Days  
Heating Degree Days 12 7  
Month to date heating degree days 23 14  
Since 1 July heating degree days 2530 2382  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 5 6  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 41 °F    
Average Humidity 66    
Maximum Humidity 77    
Minimum Humidity 55    
Precipitation  
Precipitation 0.00 in 0.02 in 0.42 in (2003)
Month to date precipitation 0.00 0.05  
Year to date precipitation 10.37 12.55  
Since 1 July precipitation 13.24 20.12  
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 15 mph (WSW)    
Max Wind Speed 28 mph    
Max Gust Speed 37 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 02, 2012 Rise Set
Actual Time 6:12 AM PDT 8:01 PM PDT
Civil Twilight 5:43 AM PDT 8:29 PM PDT
Nautical Twilight 5:09 AM PDT 9:03 PM PDT
Astronomical Twilight 4:33 AM PDT 9:40 PM PDT
Moon 4:23 PM PDT (5/2) 3:40 AM PDT (5/2)
Length of Visible Light 14h 45m
Length of Day
13h 48m
Waxing Gibbous, 84% of the Moon is Illuminated
May 2
Waxing Gibbous
May 5
Full
May 12
Last Quarter
May 20
New
May 28
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 48.9 °F 41.0 °F 74% 29.94 in 10.0 mi West 25.3 mph 38.0 mph N/A   Partly Cloudy
1:56 AM 48.9 °F 41.0 °F 74% 29.94 in 10.0 mi West 19.6 mph - N/A   Partly Cloudy
2:56 AM 48.9 °F 41.0 °F 74% 29.93 in 10.0 mi West 17.3 mph 27.6 mph N/A   Partly Cloudy
3:56 AM 48.0 °F 41.0 °F 77% 29.92 in 10.0 mi West 16.1 mph - N/A   Partly Cloudy
4:56 AM 48.0 °F 41.0 °F 77% 29.92 in 10.0 mi WSW 16.1 mph - N/A   Partly Cloudy
5:56 AM 48.0 °F 39.9 °F 74% 29.94 in 10.0 mi WSW 16.1 mph 21.9 mph N/A   Scattered Clouds
6:56 AM 48.9 °F 39.9 °F 71% 29.94 in 10.0 mi WSW 11.5 mph 19.6 mph N/A   Partly Cloudy
7:56 AM 50.0 °F 41.0 °F 71% 29.96 in 10.0 mi WSW 16.1 mph 20.7 mph N/A   Partly Cloudy
8:56 AM 52.0 °F 39.9 °F 63% 29.98 in 10.0 mi West 13.8 mph 24.2 mph N/A   Scattered Clouds
9:56 AM 53.1 °F 39.0 °F 59% 29.99 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
10:56 AM 55.0 °F 39.9 °F 57% 30.00 in 10.0 mi WSW 17.3 mph - N/A   Mostly Cloudy
11:56 AM 55.9 °F 41.0 °F 57% 30.00 in 10.0 mi West 15.0 mph 24.2 mph N/A   Mostly Cloudy
12:56 PM 57.2 °F 41.0 °F 55% 30.01 in 10.0 mi West 24.2 mph 31.1 mph N/A   Mostly Cloudy
1:56 PM 57.0 °F 41.0 °F 55% 30.00 in 10.0 mi West 18.4 mph 25.3 mph N/A   Mostly Cloudy
2:56 PM 57.0 °F 42.1 °F 57% 30.01 in 10.0 mi West 23.0 mph 32.2 mph N/A   Mostly Cloudy
3:56 PM 57.0 °F 42.1 °F 57% 29.99 in 10.0 mi West 17.3 mph 31.1 mph N/A   Mostly Cloudy
4:56 PM 55.9 °F 41.0 °F 57% 29.99 in 10.0 mi WSW 15.0 mph 24.2 mph N/A   Mostly Cloudy
5:56 PM 54.0 °F 41.0 °F 62% 29.99 in 10.0 mi West 17.3 mph 28.8 mph N/A   Overcast
6:56 PM 53.1 °F 39.9 °F 61% 29.98 in 10.0 mi West 13.8 mph - N/A   Overcast
7:56 PM 52.0 °F 39.9 °F 63% 29.99 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
8:56 PM 52.0 °F 41.0 °F 66% 29.99 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
9:56 PM 52.0 °F 42.1 °F 69% 30.01 in 10.0 mi WSW 11.5 mph - N/A   Mostly Cloudy
10:56 PM 52.0 °F 42.1 °F 69% 30.01 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
11:56 PM 51.1 °F 42.1 °F 71% 30.01 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy