San Francisco, CA

12:28 AM PDT on May 24, 2017 (GMT -0700)
San Francisco International

Weather History for KSFO - September, 2013

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Saturday, September 28, 2013

  Actual Average Record
Temperature  
Mean Temperature 66 °F 64 °F  
Max Temperature 78 °F 73 °F 95 °F (2010)
Min Temperature 53 °F 55 °F 47 °F (1947)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 18 56  
Since 1 July heating degree days 133 169  
Cooling Degree Days 1 1  
Month to date cooling degree days 39 43  
Year to date cooling degree days 139 140  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 48 °F    
Average Humidity 60    
Maximum Humidity 84    
Minimum Humidity 35    
Precipitation  
Precipitation 0.00 in 0.01 in 0.17 in (1976)
Month to date precipitation 0.23 0.14  
Year to date precipitation 2.12 13.26  
Since 1 July precipitation 0.23  
Sea Level Pressure  
Sea Level Pressure 30.06 in    
Wind  
Wind Speed 9 mph (WNW)    
Max Wind Speed 28 mph    
Max Gust Speed 32 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. 28, 2013 Rise Set
Actual Time 7:02 AM PDT 6:56 PM PDT
Civil Twilight 6:36 AM PDT 7:22 PM PDT
Nautical Twilight 6:06 AM PDT 7:53 PM PDT
Astronomical Twilight 5:35 AM PDT 8:23 PM PDT
Moon 1:00 AM PDT (9/28) 3:13 PM PDT (9/28)
Length of Visible Light 12h 46m
Length of Day
11h 53m
Waning Crescent, 35% of the Moon is Illuminated
Sep 28
Waning Crescent
Oct 4
New
Oct 11
First Quarter
Oct 18
Full
Oct 26
Last Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 55.9 °F 46.9 °F 72% 30.06 in 10.0 mi West 6.9 mph - N/A   Clear
1:56 AM 55.9 °F 45.0 °F 67% 30.06 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 55.0 °F 42.1 °F 62% 30.05 in 10.0 mi West 4.6 mph - N/A   Clear
3:56 AM 55.0 °F 37.9 °F 53% 30.04 in 10.0 mi West 3.5 mph - N/A   Clear
4:56 AM 53.1 °F 39.0 °F 59% 30.04 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 53.1 °F 39.9 °F 61% 30.04 in 10.0 mi West 5.8 mph - N/A   Clear
6:56 AM 54.0 °F 44.1 °F 69% 30.06 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
7:56 AM 57.0 °F 44.1 °F 62% 30.07 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:56 AM 62.1 °F 48.9 °F 62% 30.08 in 10.0 mi NW 4.6 mph - N/A   Partly Cloudy
9:56 AM 64.9 °F 52.0 °F 63% 30.09 in 10.0 mi NNE 4.6 mph - N/A   Partly Cloudy
10:56 AM 66.0 °F 51.1 °F 59% 30.09 in 10.0 mi NNE 4.6 mph - N/A   Partly Cloudy
11:56 AM 69.1 °F 50.0 °F 51% 30.08 in 10.0 mi NNE 5.8 mph - N/A   Partly Cloudy
12:56 PM 71.1 °F 48.9 °F 45% 30.07 in 10.0 mi NE 4.6 mph - N/A   Partly Cloudy
1:56 PM 72.0 °F 53.1 °F 51% 30.04 in 10.0 mi NNE 6.9 mph - N/A   Partly Cloudy
2:45 PM 75.2 °F 46.4 °F 36% 30.03 in 10.0 mi WNW 18.4 mph - N/A   Partly Cloudy
2:56 PM 73.0 °F 46.0 °F 38% 30.03 in 10.0 mi WNW 18.4 mph - N/A   Partly Cloudy
3:56 PM 72.0 °F 43.0 °F 35% 30.02 in 10.0 mi WNW 19.6 mph - N/A   Partly Cloudy
4:56 PM 68.0 °F 51.1 °F 55% 30.03 in 10.0 mi West 26.5 mph - N/A   Partly Cloudy
5:56 PM 66.0 °F 53.1 °F 63% 30.04 in 10.0 mi West 21.9 mph - N/A   Partly Cloudy
6:56 PM 63.0 °F 54.0 °F 72% 30.02 in 10.0 mi West 18.4 mph - N/A   Scattered Clouds
7:56 PM 62.1 °F 54.0 °F 75% 30.05 in 10.0 mi West 18.4 mph - N/A   Scattered Clouds
8:56 PM 60.1 °F 54.0 °F 80% 30.09 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds
9:56 PM 60.1 °F 54.0 °F 80% 30.09 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds
10:56 PM 61.0 °F 55.0 °F 81% 30.09 in 10.0 mi West 3.5 mph - N/A   Scattered Clouds
11:56 PM 61.0 °F 55.0 °F 81% 30.10 in 10.0 mi WNW 5.8 mph - N/A   Scattered Clouds