San Francisco, CA

4:16 PM PDT on June 20, 2018 (GMT -0700)
San Francisco International

Weather History for KSFO - August, 2017

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Sunday, August 13, 2017

  Actual Average Record
Temperature  
Mean Temperature 66 °F 64 °F  
Max Temperature 72 °F 73 °F 89 °F (1991)
Min Temperature 60 °F 56 °F 47 °F (1946)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 2 24  
Since 1 June heating degree days 124 194  
Since 1 July heating degree days 48 89  
Cooling Degree Days 1 1  
Month to date cooling degree days 22 13  
Year to date cooling degree days 102 77  
Since 1 June cooling degree days 79 58  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 54 °F    
Average Humidity 63    
Maximum Humidity 72    
Minimum Humidity 53    
Precipitation  
Precipitation 0.00 in 0.00 in 0.18 in (1991)
Month to date precipitation T 0.01  
Year to date precipitation 21.97 13.09  
Snow  
Snow 0.00 in - 0.00 in ()
Month to date snowfall 0.0  
Since 1 June snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 13 mph (West)    
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

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Aug. 13, 2017 Rise Set
Actual Time 6:23 AM PDT 8:04 PM PDT
Civil Twilight 5:55 AM PDT 8:31 PM PDT
Nautical Twilight 5:22 AM PDT 9:05 PM PDT
Astronomical Twilight 4:46 AM PDT 9:41 PM PDT
Moon 11:49 PM PDT (8/13) 12:22 PM PDT (8/13)
Length of Visible Light 14h 36m
Length of Day
13h 40m
Waning Gibbous, 64% of the Moon is Illuminated
Aug 13
Waning Gibbous
Aug 14
Last Quarter
Aug 21
New
Aug 29
First Quarter
Sep 6
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 61.0 °F 50.0 °F 67% 29.93 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
1:56 AM - 41.0 °F N/A% 29.92 in - North - - N/A   Unknown
2:56 AM 61.0 °F 52.0 °F 72% 29.91 in 10.0 mi Variable 4.6 mph - N/A   Partly Cloudy
3:56 AM 60.1 °F 52.0 °F 75% 29.91 in 10.0 mi WSW 6.9 mph - N/A   Partly Cloudy
4:56 AM 61.0 °F 52.0 °F 72% 29.92 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
5:56 AM 62.1 °F 52.0 °F 70% 29.92 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
6:56 AM 60.1 °F 52.0 °F 75% 29.94 in 10.0 mi West 10.4 mph - N/A   Partly Cloudy
7:56 AM 62.1 °F 52.0 °F 70% 29.94 in 10.0 mi NW 6.9 mph - N/A   Partly Cloudy
8:56 AM 63.0 °F 52.0 °F 67% 29.95 in 10.0 mi West 6.9 mph - N/A   Partly Cloudy
9:56 AM 64.9 °F 52.0 °F 63% 29.96 in 10.0 mi West 12.7 mph - N/A   Partly Cloudy
10:56 AM 66.0 °F 52.0 °F 60% 29.96 in 10.0 mi West 16.1 mph - N/A   Partly Cloudy
11:56 AM 68.0 °F 53.1 °F 59% 29.96 in 10.0 mi West 18.4 mph - N/A   Partly Cloudy
12:56 PM 69.1 °F 53.1 °F 57% 29.95 in 10.0 mi West 15.0 mph - N/A   Partly Cloudy
1:56 PM 71.1 °F 53.1 °F 53% 29.95 in 10.0 mi WSW 18.4 mph 26.5 mph N/A   Partly Cloudy
2:56 PM 72.0 °F 53.1 °F 51% 29.94 in 10.0 mi WSW 24.2 mph 29.9 mph N/A   Scattered Clouds
3:56 PM 72.0 °F 55.9 °F 57% 29.93 in 10.0 mi West 18.4 mph 29.9 mph N/A   Mostly Cloudy
4:06 PM 71.1 °F 57.0 °F 61% 29.93 in 10.0 mi WSW 19.6 mph 28.8 mph N/A   Mostly Cloudy
4:56 PM 71.1 °F 57.0 °F 61% 29.91 in 10.0 mi WSW 20.7 mph 32.2 mph N/A   Mostly Cloudy
5:56 PM 70.0 °F 57.9 °F 65% 29.91 in 10.0 mi West 18.4 mph 31.1 mph N/A   Mostly Cloudy
6:56 PM 70.0 °F 57.9 °F 65% 29.91 in 10.0 mi West 17.3 mph - N/A   Mostly Cloudy
7:56 PM 68.0 °F 59.0 °F 73% 29.90 in 9.0 mi WSW 19.6 mph - N/A   Mostly Cloudy
8:56 PM 66.0 °F 59.0 °F 78% 29.91 in 10.0 mi WSW 16.1 mph 24.2 mph N/A   Mostly Cloudy
9:56 PM 64.9 °F 57.9 °F 78% 29.92 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
10:56 PM 64.9 °F 57.9 °F 78% 29.91 in 10.0 mi WSW 20.7 mph - N/A   Mostly Cloudy
11:56 PM 62.1 °F 57.9 °F 86% 29.91 in 10.0 mi West 24.2 mph - N/A   Overcast