San Francisco, CA

10:19 PM PDT on September 27, 2016 (GMT -0700)
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Weather History for KSFO - February, 2012

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Friday, February 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 52 °F 53 °F  
Max Temperature 59 °F 60 °F 73 °F (2007)
Min Temperature 44 °F 47 °F 35 °F (1956)
Degree Days  
Heating Degree Days 13 12  
Month to date heating degree days 209 214  
Since 1 July heating degree days 1757 1681  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 46 °F    
Average Humidity 78    
Maximum Humidity 89    
Minimum Humidity 67    
Precipitation  
Precipitation 0.00 in 0.15 in 1.83 in (1986)
Month to date precipitation 0.39 2.50  
Year to date precipitation 2.55 6.69  
Since 1 July precipitation 5.42  
Sea Level Pressure  
Sea Level Pressure 30.23 in    
Wind  
Wind Speed 8 mph (West)    
Max Wind Speed 24 mph    
Max Gust Speed 29 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. 17, 2012 Rise Set
Actual Time 6:57 AM PST 5:50 PM PST
Civil Twilight 6:30 AM PST 6:17 PM PST
Nautical Twilight 5:59 AM PST 6:47 PM PST
Astronomical Twilight 5:29 AM PST 7:18 PM PST
Moon 3:49 AM PST (2/17) 1:52 PM PST (2/17)
Length of Visible Light 11h 46m
Length of Day
10h 53m
Waning Crescent, 18% of the Moon is Illuminated
Feb 17
Waning Crescent
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Mar 14
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 46.9 °F - 39.9 °F 77% 30.23 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 46.4 °F 45.2 °F 39.2 °F 76% 30.23 in 10.0 mi SE 3.5 mph - N/A   Clear
2:56 AM 45.0 °F 42.6 °F 39.9 °F 82% 30.23 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
3:56 AM 44.1 °F 42.5 °F 39.0 °F 82% 30.24 in 10.0 mi West 3.5 mph - N/A   Scattered Clouds
4:56 AM 46.9 °F - 43.0 °F 86% 30.24 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 AM 46.0 °F - 39.9 °F 79% 30.25 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:56 AM 46.9 °F - 41.0 °F 80% 30.25 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:56 AM 46.9 °F - 42.1 °F 83% 30.28 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 51.1 °F - 44.1 °F 77% 30.28 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:56 AM 52.0 °F - 45.0 °F 77% 30.28 in 10.0 mi East 6.9 mph - N/A   Scattered Clouds
10:56 AM 53.6 °F - 44.6 °F 72% 30.28 in 10.0 mi East 4.6 mph - N/A   Partly Cloudy
11:56 AM 53.1 °F - 46.0 °F 77% 30.27 in 10.0 mi ENE 4.6 mph - N/A   Partly Cloudy
12:56 PM 57.0 °F - 46.9 °F 69% 30.25 in 10.0 mi WNW 16.1 mph - N/A   Partly Cloudy
1:56 PM 55.0 °F - 46.9 °F 74% 30.23 in 10.0 mi West 21.9 mph - N/A   Partly Cloudy
2:56 PM 55.9 °F - 48.0 °F 75% 30.21 in 9.0 mi West 12.7 mph - N/A   Scattered Clouds
3:56 PM 55.9 °F - 48.9 °F 77% 30.20 in 10.0 mi West 17.3 mph - N/A   Scattered Clouds
4:34 PM 53.6 °F - 48.2 °F 82% 30.21 in 9.0 mi West 21.9 mph - N/A   Mostly Cloudy
4:56 PM 53.1 °F - 46.9 °F 80% 30.20 in 9.0 mi West 13.8 mph - N/A   Mostly Cloudy
5:56 PM 51.1 °F - 46.9 °F 86% 30.22 in 9.0 mi WNW 13.8 mph - N/A   Mostly Cloudy
6:25 PM 51.8 °F - 46.4 °F 82% 30.22 in 9.0 mi West 15.0 mph - N/A   Mostly Cloudy
6:56 PM 52.0 °F - 48.0 °F 86% 30.22 in 9.0 mi West 11.5 mph - N/A   Overcast
7:56 PM 52.0 °F - 48.0 °F 86% 30.22 in 9.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
8:23 PM 53.6 °F - 48.2 °F 82% 30.22 in 10.0 mi West 18.4 mph - N/A   Mostly Cloudy
8:50 PM 53.6 °F - 48.2 °F 82% 30.22 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds
8:56 PM 53.1 °F - 48.0 °F 83% 30.22 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds
9:34 PM 53.6 °F - 48.2 °F 82% 30.23 in 10.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
9:56 PM 53.1 °F - 48.9 °F 86% 30.23 in 9.0 mi West 10.4 mph - N/A   Mostly Cloudy
10:06 PM 53.6 °F - 48.2 °F 82% 30.22 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
10:56 PM 53.1 °F - 48.9 °F 86% 30.23 in 10.0 mi West 11.5 mph - N/A   Overcast
11:56 PM 52.0 °F - 48.9 °F 89% 30.22 in 10.0 mi West 15.0 mph - N/A   Overcast