San Francisco, CA

4:38 AM PDT on July 28, 2017 (GMT -0700)
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Weather History for KSFO - February, 2011

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Thursday, February 3, 2011

  Actual Average Record
Temperature  
Mean Temperature 51 °F 52 °F  
Max Temperature 60 °F 58 °F 70 °F (1984)
Min Temperature 41 °F 45 °F 32 °F (1979)
Degree Days  
Heating Degree Days 14 13  
Month to date heating degree days 35 39  
Since 1 July heating degree days 1382 1506  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 38 °F    
Average Humidity 61    
Maximum Humidity 86    
Minimum Humidity 36    
Precipitation  
Precipitation 0.00 in 0.15 in 1.02 in (1998)
Month to date precipitation 0.00 0.44  
Year to date precipitation 0.94 4.63  
Since 1 July precipitation 10.20  
Sea Level Pressure  
Sea Level Pressure 30.44 in    
Wind  
Wind Speed 3 mph (West)    
Max Wind Speed 13 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Feb. 03, 2011 Rise Set
Actual Time 7:11 AM PST 5:35 PM PST
Civil Twilight 6:44 AM PST 6:02 PM PST
Nautical Twilight 6:12 AM PST 6:34 PM PST
Astronomical Twilight 5:42 AM PST 7:04 PM PST
Moon 7:16 AM PST (2/3) 6:32 PM PST (2/3)
Length of Visible Light 11h 18m
Length of Day
10h 23m
New Moon, 1% of the Moon is Illuminated
Feb 3
New Moon
Feb 10
First Quarter
Feb 18
Full
Feb 24
Last Quarter
Mar 4
New

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 48.0 °F - 34.0 °F 58% 30.43 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 48.0 °F - 32.0 °F 54% 30.43 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
2:56 AM 44.1 °F - 30.0 °F 58% 30.43 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:56 AM 45.0 °F - 36.0 °F 71% 30.42 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:56 AM 43.0 °F - 33.1 °F 68% 30.43 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 42.1 °F 40.2 °F 34.0 °F 73% 30.45 in 10.0 mi West 3.5 mph - N/A   Clear
6:56 AM 43.0 °F - 36.0 °F 76% 30.47 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:56 AM 45.0 °F - 37.0 °F 74% 30.48 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 48.9 °F - 41.0 °F 74% 30.49 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:56 AM 51.1 °F - 39.9 °F 66% 30.50 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:56 AM 52.0 °F - 42.1 °F 69% 30.50 in 10.0 mi East 3.5 mph - N/A   Mostly Cloudy
11:56 AM 53.1 °F - 42.1 °F 66% 30.48 in 10.0 mi East 3.5 mph - N/A   Mostly Cloudy
12:56 PM 54.0 °F - 37.9 °F 55% 30.45 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:56 PM 57.9 °F - 30.9 °F 36% 30.43 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 PM 59.0 °F - 37.9 °F 46% 30.42 in 10.0 mi East 4.6 mph - N/A   Scattered Clouds
3:56 PM 57.9 °F - 34.0 °F 41% 30.41 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:56 PM 59.0 °F - 43.0 °F 55% 30.41 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:56 PM 54.0 °F - 44.1 °F 69% 30.41 in 10.0 mi WNW 6.9 mph - N/A   Scattered Clouds
6:56 PM 52.0 °F - 39.9 °F 63% 30.41 in 10.0 mi West 11.5 mph - N/A   Scattered Clouds
7:56 PM 51.1 °F - 43.0 °F 74% 30.41 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
8:56 PM 50.0 °F - 42.1 °F 74% 30.41 in 10.0 mi West 6.9 mph - N/A   Partly Cloudy
9:56 PM 48.9 °F - 41.0 °F 74% 30.41 in 10.0 mi West 6.9 mph - N/A   Clear
10:56 PM 48.0 °F - 44.1 °F 86% 30.41 in 10.0 mi West 8.1 mph - N/A   Clear
11:56 PM 46.9 °F - 42.1 °F 83% 30.41 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy