San Francisco, CA

12:04 AM PST on February 10, 2016 (GMT -0800)
San Francisco International

Weather History for KSFO - August, 2013

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Saturday, August 31, 2013

  Actual Average Record
Temperature  
Mean Temperature 64 °F 65 °F  
Max Temperature 71 °F 74 °F 89 °F (2005)
Min Temperature 57 °F 56 °F 48 °F (1957)
Degree Days  
Heating Degree Days 1 2  
Month to date heating degree days 37 47  
Since 1 June heating degree days 203 218  
Since 1 July heating degree days 115 113  
Cooling Degree Days 0 2  
Month to date cooling degree days 28 33  
Year to date cooling degree days 100 97  
Since 1 June cooling degree days 73 78  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 56 °F    
Average Humidity 75    
Maximum Humidity 93    
Minimum Humidity 57    
Precipitation  
Precipitation 0.00 in 0.00 in 0.01 in (1964)
Month to date precipitation T 0.04  
Year to date precipitation 1.89 13.12  
Since 1 July precipitation T  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 15 mph (WNW)    
Max Wind Speed 26 mph    
Max Gust Speed 31 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 31, 2013 Rise Set
Actual Time 6:39 AM PDT 7:39 PM PDT
Civil Twilight 6:12 AM PDT 8:06 PM PDT
Nautical Twilight 5:40 AM PDT 8:38 PM PDT
Astronomical Twilight 5:07 AM PDT 9:11 PM PDT
Moon 2:15 AM PDT (8/31) 4:38 PM PDT (8/31)
Length of Visible Light 13h 54m
Length of Day
13h 00m
Waning Crescent, 20% of the Moon is Illuminated
Aug 31
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 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 61.0 °F 55.9 °F 83% 29.96 in 10.0 mi WNW 13.8 mph - N/A   Clear
1:41 AM 60.8 °F 55.4 °F 82% 29.95 in 10.0 mi WNW 11.5 mph - N/A   Partly Cloudy
1:56 AM 60.1 °F 55.0 °F 83% 29.96 in 10.0 mi WNW 12.7 mph - N/A   Partly Cloudy
2:56 AM 59.0 °F 55.0 °F 87% 29.95 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
3:56 AM 57.9 °F 55.0 °F 90% 29.96 in 10.0 mi WNW 13.8 mph - N/A   Partly Cloudy
4:56 AM 57.0 °F 54.0 °F 89% 29.95 in 10.0 mi WNW 18.4 mph - N/A   Scattered Clouds
5:44 AM 57.2 °F 55.4 °F 94% 29.96 in 10.0 mi WNW 12.7 mph 21.9 mph N/A   Mostly Cloudy
5:56 AM 57.0 °F 55.0 °F 93% 29.95 in 10.0 mi WNW 18.4 mph 23.0 mph N/A   Mostly Cloudy
6:14 AM 57.2 °F 55.4 °F 94% 29.96 in 10.0 mi WNW 15.0 mph - N/A   Scattered Clouds
6:56 AM 57.9 °F 55.0 °F 90% 29.98 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
7:20 AM 57.2 °F 55.4 °F 94% 29.98 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
7:56 AM 59.0 °F 55.9 °F 90% 29.99 in 10.0 mi West 10.4 mph - N/A   Mostly Cloudy
8:56 AM 61.0 °F 55.9 °F 83% 30.00 in 10.0 mi West 10.4 mph - N/A   Mostly Cloudy
9:29 AM 62.6 °F 55.4 °F 77% 29.99 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
9:56 AM 64.0 °F 55.9 °F 75% 30.00 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds
10:56 AM 66.0 °F 55.9 °F 70% 30.00 in 10.0 mi West 16.1 mph 21.9 mph N/A   Scattered Clouds
11:56 AM 68.0 °F 55.9 °F 65% 29.99 in 10.0 mi WNW 12.7 mph - N/A   Partly Cloudy
12:56 PM 69.1 °F 55.9 °F 63% 29.99 in 10.0 mi West 18.4 mph - N/A   Partly Cloudy
1:56 PM 71.1 °F 55.9 °F 59% 29.97 in 10.0 mi West 23.0 mph - N/A   Partly Cloudy
2:56 PM 70.0 °F 57.0 °F 63% 29.96 in 10.0 mi West 24.2 mph - N/A   Scattered Clouds
3:56 PM 69.1 °F 57.0 °F 65% 29.94 in 10.0 mi West 21.9 mph - N/A   Scattered Clouds
4:56 PM 68.0 °F 57.0 °F 68% 29.93 in 10.0 mi West 17.3 mph - N/A   Scattered Clouds
5:56 PM 66.0 °F 55.9 °F 70% 29.92 in 10.0 mi West 17.3 mph - N/A   Scattered Clouds
6:56 PM 64.0 °F 55.9 °F 75% 29.92 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
7:56 PM 61.0 °F 55.0 °F 81% 29.93 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy
8:56 PM 60.1 °F 55.0 °F 83% 29.94 in 10.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
9:56 PM 60.1 °F 55.0 °F 83% 29.95 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
10:56 PM 60.1 °F 55.0 °F 83% 29.96 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
11:52 PM 60.8 °F 55.4 °F 82% 29.95 in 10.0 mi West 11.5 mph - N/A   Overcast
11:56 PM 60.1 °F 55.0 °F 83% 29.96 in 10.0 mi West 13.8 mph - N/A   Overcast