San Francisco, CA

6:25 AM PDT on March 25, 2017 (GMT -0700)
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Weather History for KSFO - September, 2012

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Wednesday, September 5, 2012

  Actual Average Record
Temperature  
Mean Temperature 60 °F 65 °F  
Max Temperature 65 °F 74 °F 94 °F (2004)
Min Temperature 54 °F 56 °F 45 °F (1954)
Degree Days  
Heating Degree Days 5 2  
Month to date heating degree days 20 10  
Since 1 July heating degree days 200 123  
Cooling Degree Days 0 2  
Month to date cooling degree days 0 10  
Year to date cooling degree days 34 107  
Growing Degree Days 9 (Base 50)    
Moisture  
Dew Point 51 °F    
Average Humidity 78    
Maximum Humidity 89    
Minimum Humidity 67    
Precipitation  
Precipitation 0.00 in 0.00 in 0.03 in (1945)
Month to date precipitation 0.00 0.01  
Year to date precipitation 10.46 13.13  
Since 1 July precipitation T  
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 10 mph (WNW)    
Max Wind Speed 23 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

Sep. 05, 2012 Rise Set
Actual Time 6:43 AM PDT 7:31 PM PDT
Civil Twilight 6:16 AM PDT 7:58 PM PDT
Nautical Twilight 5:45 AM PDT 8:29 PM PDT
Astronomical Twilight 5:12 AM PDT 9:01 PM PDT
Moon 10:12 PM PDT (9/5) 11:45 AM PDT (9/5)
Length of Visible Light 13h 41m
Length of Day
12h 48m
Waning Gibbous, 75% of the Moon is Illuminated
Sep 5
Waning Gibbous
Sep 8
Last Quarter
Sep 15
New
Sep 22
First Quarter
Sep 29
Full

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 54.0 °F 50.0 °F 86% 30.00 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
1:56 AM 54.0 °F 50.0 °F 86% 30.00 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
2:03 AM 53.6 °F 51.8 °F 94% 30.00 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
2:33 AM 53.6 °F 50.0 °F 88% 30.00 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
2:56 AM 54.0 °F 50.0 °F 86% 30.00 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy
3:56 AM 54.0 °F 48.9 °F 83% 29.99 in 10.0 mi West 3.5 mph - N/A   Mostly Cloudy
4:56 AM 54.0 °F 50.0 °F 86% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
5:56 AM 54.0 °F 50.0 °F 86% 29.99 in 10.0 mi WNW 5.8 mph - N/A   Overcast
6:56 AM 54.0 °F 50.0 °F 86% 29.99 in 9.0 mi West 5.8 mph - N/A   Overcast
7:56 AM 55.0 °F 50.0 °F 83% 30.00 in 8.0 mi West 6.9 mph - N/A   Overcast
8:56 AM 55.9 °F 51.1 °F 84% 29.99 in 8.0 mi NNE 3.5 mph - N/A   Overcast
9:44 AM 57.2 °F 51.8 °F 82% 30.00 in 9.0 mi NNW 3.5 mph - N/A   Mostly Cloudy
9:56 AM 57.9 °F 51.1 °F 78% 29.99 in 9.0 mi North 4.6 mph - N/A   Mostly Cloudy
10:29 AM 59.0 °F 51.8 °F 77% 30.00 in 9.0 mi NW 9.2 mph - N/A   Mostly Cloudy
10:56 AM 60.1 °F 51.1 °F 72% 30.01 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
11:56 AM 60.1 °F 52.0 °F 75% 30.00 in 10.0 mi NNE 3.5 mph - N/A   Mostly Cloudy
12:56 PM 62.1 °F 51.1 °F 67% 29.99 in 10.0 mi NW 12.7 mph - N/A   Mostly Cloudy
1:56 PM 62.1 °F 51.1 °F 67% 29.97 in 10.0 mi WNW 16.1 mph - N/A   Mostly Cloudy
2:56 PM 61.0 °F 51.1 °F 70% 29.96 in 10.0 mi WNW 18.4 mph - N/A   Mostly Cloudy
3:56 PM 62.1 °F 51.1 °F 67% 29.94 in 10.0 mi WNW 19.6 mph - N/A   Mostly Cloudy
4:56 PM 61.0 °F 51.1 °F 70% 29.95 in 10.0 mi WNW 18.4 mph - N/A   Mostly Cloudy
5:56 PM 60.1 °F 51.1 °F 72% 29.94 in 10.0 mi WNW 18.4 mph - N/A   Mostly Cloudy
6:56 PM 59.0 °F 51.1 °F 75% 29.95 in 10.0 mi West 17.3 mph - N/A   Mostly Cloudy
7:56 PM 59.0 °F 51.1 °F 75% 29.96 in 10.0 mi West 13.8 mph - N/A   Mostly Cloudy
8:56 PM 57.2 °F 51.8 °F 82% 29.98 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
9:56 PM 57.9 °F 51.1 °F 78% 29.99 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
10:56 PM 57.0 °F 51.1 °F 81% 29.99 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
11:56 PM 57.0 °F 51.1 °F 81% 29.98 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy