Weather History for San Francisco, CA

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Thursday, January 11, 2007

  Actual Average Record
Temperature  
Mean Temperature 45 °F 50 °F  
Max Temperature 50 °F 56 °F 69 °F (1959)
Min Temperature 40 °F 44 °F 30 °F (1949)
Degree Days  
Heating Degree Days 20 15  
Month to date heating degree days 169 165  
Since 1 July heating degree days 1229 1175  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 29 °F    
Average Humidity 54    
Maximum Humidity 65    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in 0.15 in 1.30 in (1980)
Month to date precipitation 0.13 1.54  
Year to date precipitation 0.13 1.54  
Since 1 July precipitation 5.47 9.11  
Snow  
Snow 0.00 in - 0.00 in ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.03 in    
Wind  
Wind Speed 11 mph (NW)    
Max Wind Speed 26 mph    
Max Gust Speed 31 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 11, 2007 Rise Set
Actual Time 7:24 AM PST 5:10 PM PST
Civil Twilight 6:55 AM PST 5:39 PM PST
Nautical Twilight 6:23 AM PST 6:11 PM PST
Astronomical Twilight 5:51 AM PST 6:43 PM PST
Moon 12:23 AM PST (1/11) 11:31 AM PST (1/11)
Length of Visible Light 10h 43m
Length of Day
9h 46m
Waning Gibbous, 47% of the Moon is Illuminated
Jan 11
Waning Gibbous
Jan 18
New
Jan 25
First Quarter
Feb 1
Full
Feb 10
Last Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 46.0 °F 38.5 °F 30.9 °F 56% 30.01 in 10.0 mi WNW 19.6 mph 29.9 mph N/A   Clear
1:56 AM 45.0 °F 37.1 °F 28.0 °F 52% 30.02 in 10.0 mi WNW 19.6 mph - N/A   Partly Cloudy
2:56 AM 44.1 °F 36.8 °F 28.9 °F 55% 30.02 in 10.0 mi WNW 16.1 mph - N/A   Partly Cloudy
3:56 AM 44.1 °F 39.0 °F 28.0 °F 53% 30.02 in 10.0 mi WNW 9.2 mph - N/A   Clear
4:56 AM 43.0 °F 37.7 °F 28.9 °F 58% 30.02 in 10.0 mi NW 9.2 mph - N/A   Partly Cloudy
5:56 AM 42.1 °F 39.2 °F 26.1 °F 53% 30.02 in 10.0 mi NW 4.6 mph - N/A   Partly Cloudy
6:56 AM 42.1 °F 35.7 °F 26.1 °F 53% 30.04 in 10.0 mi NNW 11.5 mph - N/A   Partly Cloudy
7:56 AM 42.1 °F 37.1 °F 24.1 °F 49% 30.05 in 10.0 mi NW 8.1 mph - N/A   Partly Cloudy
8:56 AM 43.0 °F 39.5 °F 26.1 °F 51% 30.07 in 10.0 mi NW 5.8 mph - N/A   Partly Cloudy
9:56 AM 44.1 °F 40.8 °F 28.0 °F 53% 30.08 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
10:56 AM 46.9 °F - 26.1 °F 44% 30.08 in 10.0 mi NE 3.5 mph - N/A   Partly Cloudy
11:56 AM 46.0 °F 42.5 °F 30.9 °F 56% 30.06 in 10.0 mi East 6.9 mph - N/A   Clear
12:56 PM 48.9 °F - 28.0 °F 44% 30.04 in 10.0 mi North 4.6 mph - N/A   Partly Cloudy
1:56 PM 48.9 °F - 28.0 °F 44% 30.02 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:56 PM 50.0 °F - 28.9 °F 44% 30.01 in 10.0 mi West 18.4 mph - N/A   Partly Cloudy
3:56 PM 48.9 °F - 30.0 °F 48% 30.01 in 10.0 mi West 19.6 mph - N/A   Partly Cloudy
4:56 PM 46.9 °F - 30.9 °F 54% 30.01 in 10.0 mi WNW 17.3 mph - N/A   Partly Cloudy
5:56 PM 46.0 °F 38.8 °F 30.0 °F 54% 30.01 in 10.0 mi West 18.4 mph - N/A   Clear
6:56 PM 45.0 °F 37.4 °F 30.9 °F 58% 30.01 in 10.0 mi WNW 18.4 mph - N/A   Clear
7:56 PM 44.1 °F 37.4 °F 32.0 °F 63% 30.01 in 10.0 mi West 13.8 mph - N/A   Partly Cloudy
8:56 PM 43.0 °F 36.0 °F 30.0 °F 60% 30.02 in 10.0 mi WNW 13.8 mph - N/A   Partly Cloudy
9:56 PM 43.0 °F 36.8 °F 30.0 °F 60% 30.03 in 10.0 mi WNW 11.5 mph - N/A   Partly Cloudy