Weather History for San Francisco, CA

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Monday, February 4, 2013

  Actual Average Record
Temperature  
Mean Temperature 49 °F 52 °F  
Max Temperature 54 °F 58 °F 71 °F (2001)
Min Temperature 44 °F 46 °F 32 °F (1955)
Degree Days  
Heating Degree Days 16 13  
Month to date heating degree days 53 52  
Since 1 July heating degree days 1548 1519  
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 85    
Maximum Humidity 93    
Minimum Humidity 77    
Precipitation  
Precipitation 0.00 in 0.15 in 1.30 in (1991)
Month to date precipitation 0.00 0.59  
Year to date precipitation 0.20 4.78  
Since 1 July precipitation 11.20 12.35  
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 5 mph (WNW)    
Max Wind Speed 17 mph    
Max Gust Speed 21 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 04, 2013 Rise Set
Actual Time 7:10 AM PST 5:37 PM PST
Civil Twilight 6:42 AM PST 6:04 PM PST
Nautical Twilight 6:11 AM PST 6:35 PM PST
Astronomical Twilight 5:40 AM PST 7:06 PM PST
Moon 1:50 AM PST (2/4) 12:07 PM PST (2/4)
Length of Visible Light 11h 21m
Length of Day
10h 26m
Last Quarter, 36% of the Moon is Illuminated
Feb 4
Last Quarter
Feb 9
New
Feb 17
First Quarter
Feb 25
Full
Mar 4
Last Quarter

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 46.0 °F 42.1 °F 86% 30.17 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:56 AM 46.0 °F 43.0 °F 89% 30.17 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:56 AM 46.9 °F 44.1 °F 90% 30.15 in 9.0 mi South 4.6 mph - N/A   Mostly Cloudy
4:56 AM 46.0 °F 43.0 °F 89% 30.15 in 9.0 mi Calm Calm - N/A   Overcast
5:56 AM 48.0 °F 45.0 °F 89% 30.15 in 10.0 mi West 10.4 mph - N/A   Overcast
6:56 AM 48.0 °F 45.0 °F 89% 30.16 in 7.0 mi WNW 10.4 mph - N/A   Overcast
7:56 AM 48.0 °F 45.0 °F 89% 30.17 in 8.0 mi NW 8.1 mph - N/A   Overcast
8:56 AM 48.9 °F 45.0 °F 86% 30.19 in 8.0 mi Calm Calm - N/A   Overcast
9:56 AM 50.0 °F 45.0 °F 83% 30.19 in 8.0 mi Calm Calm - N/A   Overcast
10:56 AM 50.0 °F 45.0 °F 83% 30.19 in 8.0 mi Calm Calm - N/A   Overcast
11:56 AM 51.1 °F 45.0 °F 80% 30.17 in 8.0 mi NNE 4.6 mph - N/A   Overcast
12:28 PM 51.8 °F 46.4 °F 82% 30.15 in 8.0 mi ENE 4.6 mph - N/A   Mostly Cloudy
12:56 PM 52.0 °F 46.0 °F 80% 30.14 in 8.0 mi NE 5.8 mph - N/A   Mostly Cloudy
1:56 PM 52.0 °F 46.0 °F 80% 30.11 in 8.0 mi NE 4.6 mph - N/A   Mostly Cloudy
2:56 PM 54.0 °F 46.0 °F 75% 30.09 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy
3:56 PM 51.1 °F 45.0 °F 80% 30.09 in 10.0 mi WNW 16.1 mph - N/A   Mostly Cloudy
4:56 PM 50.0 °F 44.6 °F 82% 30.09 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
5:56 PM 48.0 °F 44.1 °F 86% 30.09 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
6:56 PM 48.0 °F 44.1 °F 86% 30.10 in 9.0 mi West 16.1 mph - N/A   Mostly Cloudy
7:44 PM 48.2 °F 44.6 °F 87% 30.10 in 10.0 mi West 18.4 mph - N/A   Mostly Cloudy
7:56 PM 48.0 °F 44.1 °F 86% 30.10 in 10.0 mi West 18.4 mph - N/A   Scattered Clouds
8:56 PM 46.9 °F 43.0 °F 86% 30.10 in 10.0 mi West 16.1 mph - N/A   Mostly Cloudy
9:56 PM 48.0 °F 42.1 °F 80% 30.11 in 10.0 mi West 15.0 mph - N/A   Partly Cloudy
10:56 PM 48.0 °F 42.1 °F 80% 30.12 in 10.0 mi West 13.8 mph - N/A   Mostly Cloudy
11:13 PM 48.2 °F 42.8 °F 82% 30.12 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
11:56 PM 48.0 °F 42.1 °F 80% 30.13 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy