Weather History for San Francisco, CA

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Monday, January 30, 2012

  Actual Average Record
Temperature  
Mean Temperature 53 °F 51 °F  
Max Temperature 56 °F 58 °F 71 °F (1976)
Min Temperature 49 °F 45 °F 30 °F (1975)
Degree Days  
Heating Degree Days 12 14  
Month to date heating degree days 427 441  
Since 1 July heating degree days 1534 1451  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 46 °F    
Average Humidity 76    
Maximum Humidity 86    
Minimum Humidity 66    
Precipitation  
Precipitation T in 0.14 in 1.91 in (1963)
Month to date precipitation 2.16 4.05  
Year to date precipitation 2.16 4.05  
Since 1 July precipitation 5.03 11.62  
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 8 mph (West)    
Max Wind Speed 20 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jan. 30, 2012 Rise Set
Actual Time 7:15 AM PST 5:30 PM PST
Civil Twilight 6:47 AM PST 5:58 PM PST
Nautical Twilight 6:15 AM PST 6:29 PM PST
Astronomical Twilight 5:45 AM PST 7:00 PM PST
Moon 10:50 AM PST (1/30) 12:10 AM PST (1/30)
Length of Visible Light 11h 11m
Length of Day
10h 15m
Waxing Crescent, 47% of the Moon is Illuminated
Jan 30
Waxing Crescent
Jan 30
First Quarter
Feb 7
Full
Feb 14
Last Quarter
Feb 21
New

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 50.0 °F 39.9 °F 68% 30.13 in 10.0 mi South 3.5 mph - N/A   Mostly Cloudy
1:56 AM 50.0 °F 43.0 °F 77% 30.13 in 10.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
2:56 AM 51.1 °F 46.9 °F 86% 30.12 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
3:56 AM 51.1 °F 46.0 °F 83% 30.10 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
4:56 AM 51.1 °F 45.0 °F 80% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 AM 50.0 °F 43.0 °F 77% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:56 AM 48.9 °F 44.1 °F 83% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:56 AM 50.0 °F 44.1 °F 80% 30.10 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 52.0 °F 45.0 °F 77% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:56 AM 53.6 °F 46.4 °F 77% 30.09 in 10.0 mi East 3.5 mph - N/A   Mostly Cloudy
10:56 AM 53.1 °F 46.9 °F 80% 30.10 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:56 AM 55.0 °F 46.9 °F 74% 30.09 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
12:56 PM 53.1 °F 46.9 °F 80% 30.05 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
1:56 PM 53.6 °F 46.4 °F 77% 30.04 in 10.0 mi WNW 15.0 mph - N/A   Mostly Cloudy
2:56 PM 53.1 °F 46.9 °F 80% 30.05 in 10.0 mi West 18.4 mph - N/A   Mostly Cloudy
3:17 PM 51.8 °F 46.4 °F 82% 30.05 in 10.0 mi West 17.3 mph - N/A   Mostly Cloudy
3:56 PM 52.0 °F 46.9 °F 83% 30.06 in 10.0 mi West 13.8 mph - N/A   Mostly Cloudy
4:56 PM 51.1 °F 46.9 °F 86% 30.05 in 10.0 mi WNW 12.7 mph 20.7 mph N/A   Mostly Cloudy
5:33 PM 51.8 °F 46.4 °F 82% 30.05 in 10.0 mi West 13.8 mph - N/A   Mostly Cloudy
5:56 PM 51.1 °F 46.9 °F 86% 30.05 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
6:49 PM 51.8 °F 46.4 °F 82% 30.05 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
6:56 PM 51.1 °F 46.9 °F 86% 30.06 in 10.0 mi West 10.4 mph - N/A   Mostly Cloudy
7:56 PM 51.1 °F 46.9 °F 86% 30.07 in 10.0 mi West 13.8 mph - N/A   Overcast
8:56 PM 50.0 °F 46.9 °F 89% 30.09 in 10.0 mi West 11.5 mph - 0.00 in   Light Drizzle
9:44 PM 50.0 °F 46.4 °F 87% 30.09 in 10.0 mi West 11.5 mph - 0.00 in   Overcast
9:56 PM 50.0 °F 46.0 °F 86% 30.08 in 10.0 mi West 6.9 mph - 0.00 in   Overcast
10:56 PM 50.0 °F 46.0 °F 86% 30.08 in 10.0 mi SW 3.5 mph - N/A   Overcast
11:56 PM 50.0 °F 46.0 °F 86% 30.10 in 10.0 mi West 8.1 mph - N/A   Overcast