Weather History for San Francisco, CA

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Thursday, January 12, 2006

  Actual Average Record
Temperature  
Mean Temperature 53 °F 50 °F  
Max Temperature 56 °F 56 °F 70 °F (2009)
Min Temperature 50 °F 44 °F 32 °F (1963)
Degree Days  
Heating Degree Days 12 15  
Month to date heating degree days 145 180  
Since 1 July heating degree days 1023 1190  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 47 °F    
Average Humidity 89    
Maximum Humidity 100    
Minimum Humidity 77    
Precipitation  
Precipitation 0.00 in 0.14 in 1.56 in (1993)
Month to date precipitation 1.30 1.68  
Year to date precipitation 1.30 1.68  
Since 1 July precipitation 12.03 9.25  
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 30.12 in    
Wind  
Wind Speed 3 mph (East)    
Max Wind Speed 13 mph    
Max Gust Speed 14 mph    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 12, 2006 Rise Set
Actual Time 7:24 AM PST 5:11 PM PST
Civil Twilight 6:55 AM PST 5:40 PM PST
Nautical Twilight 6:23 AM PST 6:12 PM PST
Astronomical Twilight 5:51 AM PST 6:44 PM PST
Moon 3:32 PM PST (1/12) 6:28 AM PST (1/12)
Length of Visible Light 10h 45m
Length of Day
9h 47m
Waxing Gibbous, 98% of the Moon is Illuminated
Jan 12
Waxing Gibbous
Jan 14
Full
Jan 22
Last Quarter
Jan 29
New
Feb 4
First 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 50.0 °F - 46.0 °F 86% 30.16 in 9.0 mi Calm Calm - N/A   Partly Cloudy
1:56 AM 48.0 °F - 45.0 °F 89% 30.16 in 9.0 mi Calm Calm - N/A   Partly Cloudy
2:56 AM 46.0 °F - 43.0 °F 89% 30.16 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:56 AM 46.0 °F - 44.1 °F 93% 30.16 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:56 AM 45.0 °F - 44.1 °F 97% 30.15 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:56 AM 45.0 °F - 43.0 °F 93% 30.16 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 AM 45.0 °F - 44.1 °F 97% 30.16 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:56 AM 46.0 °F 43.9 °F 44.1 °F 93% 30.16 in 9.0 mi SSE 4.6 mph - N/A   Scattered Clouds
8:56 AM 48.9 °F - 46.0 °F 90% 30.17 in 8.0 mi SSE 3.5 mph - N/A   Mostly Cloudy
9:56 AM 50.0 °F - 46.0 °F 86% 30.18 in 10.0 mi East 3.5 mph - N/A   Mostly Cloudy
10:56 AM 51.1 °F - 46.9 °F 86% 30.17 in 6.0 mi ENE 4.6 mph - N/A   Scattered Clouds
11:56 AM 53.1 °F - 48.0 °F 83% 30.14 in 6.0 mi ENE 3.5 mph - N/A   Haze
12:56 PM 54.0 °F - 48.0 °F 80% 30.12 in 8.0 mi North 4.6 mph - N/A   Scattered Clouds
1:56 PM 54.0 °F - 48.9 °F 83% 30.11 in 6.0 mi Calm Calm - N/A   Haze
2:56 PM 53.6 °F - 48.2 °F 82% 30.10 in 6.0 mi Calm Calm - N/A   Haze
3:56 PM 55.9 °F - 50.0 °F 80% 30.09 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
4:56 PM 55.0 °F - 48.9 °F 80% 30.08 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 PM 54.0 °F - 50.0 °F 86% 30.07 in 9.0 mi NNE 3.5 mph - N/A   Scattered Clouds
6:56 PM 53.1 °F - 50.0 °F 89% 30.06 in 10.0 mi ENE 6.9 mph - N/A   Partly Cloudy
7:56 PM 53.1 °F - 48.0 °F 83% 30.07 in 10.0 mi ENE 10.4 mph - N/A   Partly Cloudy
8:56 PM 53.1 °F - 48.0 °F 83% 30.06 in 10.0 mi East 9.2 mph - N/A   Clear
9:56 PM 52.0 °F - 48.9 °F 89% 30.05 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
10:56 PM 51.1 °F - 48.0 °F 89% 30.05 in 6.0 mi East 5.8 mph - N/A   Mostly Cloudy
11:56 PM 50.0 °F - 46.9 °F 89% 30.04 in 6.0 mi SSE 6.9 mph - N/A   Mostly Cloudy