Weather History for San Francisco, CA

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Tuesday, January 2, 2007

  Actual Average Record
Temperature  
Mean Temperature 50 °F 50 °F  
Max Temperature 57 °F 56 °F 69 °F (1996)
Min Temperature 43 °F 44 °F 29 °F (1960)
Degree Days  
Heating Degree Days 15 15  
Month to date heating degree days 30 30  
Since 1 July heating degree days 1090 1040  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 44 °F    
Average Humidity 77    
Maximum Humidity 93    
Minimum Humidity 61    
Precipitation  
Precipitation 0.00 in 0.14 in 1.67 in (1977)
Month to date precipitation 0.00 0.28  
Year to date precipitation 0.00 0.28  
Since 1 July precipitation 5.34 7.85  
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 30.18 in    
Wind  
Wind Speed 4 mph (NW)    
Max Wind Speed 13 mph    
Max Gust Speed 15 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jan. 02, 2007 Rise Set
Actual Time 7:24 AM PST 5:02 PM PST
Civil Twilight 6:55 AM PST 5:31 PM PST
Nautical Twilight 6:22 AM PST 6:04 PM PST
Astronomical Twilight 5:50 AM PST 6:36 PM PST
Moon 4:06 PM PST (1/2) 6:59 AM PST (1/2)
Length of Visible Light 10h 36m
Length of Day
9h 37m
Waxing Gibbous, 99% of the Moon is Illuminated
Jan 2
Waxing Gibbous
Jan 3
Full
Jan 11
Last Quarter
Jan 18
New
Jan 25
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 46.9 °F - 41.0 °F 80% 30.19 in 10.0 mi WNW 3.5 mph - N/A   Scattered Clouds
1:56 AM 46.0 °F - 39.9 °F 79% 30.19 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:56 AM 46.0 °F - 41.0 °F 83% 30.21 in 10.0 mi Calm Calm - N/A   Scattered Clouds
3:56 AM 44.1 °F - 39.9 °F 85% 30.20 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:56 AM 44.1 °F - 39.0 °F 82% 30.20 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:56 AM 44.1 °F - 39.9 °F 85% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:56 AM 46.0 °F 43.9 °F 42.1 °F 86% 30.21 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
7:56 AM 46.9 °F - 41.0 °F 80% 30.22 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 51.1 °F - 39.9 °F 66% 30.22 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:56 AM 51.1 °F - 46.9 °F 86% 30.25 in 9.0 mi North 8.1 mph - N/A   Mostly Cloudy
10:56 AM 51.1 °F - 46.0 °F 83% 30.22 in 10.0 mi ENE 3.5 mph - N/A   Mostly Cloudy
11:56 AM 52.0 °F - 46.0 °F 80% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:56 PM 54.0 °F - 46.0 °F 75% 30.18 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:56 PM 53.1 °F - 46.9 °F 80% 30.14 in 10.0 mi NE 4.6 mph - N/A   Mostly Cloudy
2:56 PM 55.9 °F - 43.0 °F 62% 30.15 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:56 PM 54.0 °F - 46.0 °F 75% 30.14 in 10.0 mi NNE 5.8 mph - N/A   Mostly Cloudy
4:56 PM 54.0 °F - 48.0 °F 80% 30.16 in 9.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
5:56 PM 52.0 °F - 46.0 °F 80% 30.15 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
6:56 PM 52.0 °F - 46.0 °F 80% 30.16 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
7:56 PM 52.0 °F - 48.0 °F 86% 30.16 in 9.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
8:56 PM 50.0 °F - 48.0 °F 93% 30.17 in 9.0 mi West 9.2 mph - N/A   Mostly Cloudy
9:50 PM 50.0 °F - 48.2 °F 94% 30.17 in 9.0 mi WNW 10.4 mph - N/A   Scattered Clouds
9:56 PM 50.0 °F - 48.0 °F 93% 30.17 in 9.0 mi WNW 11.5 mph - N/A   Scattered Clouds
10:56 PM 50.0 °F - 48.0 °F 93% 30.16 in 9.0 mi West 5.8 mph - N/A   Mostly Cloudy
11:56 PM 50.0 °F - 46.9 °F 89% 30.16 in 9.0 mi NW 8.1 mph - N/A   Scattered Clouds