Weather History for KSFO - August, 2014

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Saturday, August 9, 2014

  Actual Average Record
Temperature  
Mean Temperature 65 °F 64 °F  
Max Temperature 70 °F 72 °F 95 °F (1970)
Min Temperature 59 °F 56 °F 48 °F (1954)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 1 18  
Since 1 June heating degree days 69 188  
Since 1 July heating degree days 20 83  
Cooling Degree Days 0 1  
Month to date cooling degree days 13 9  
Year to date cooling degree days 194 73  
Since 1 June cooling degree days 131 54  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 55 °F    
Average Humidity 74    
Maximum Humidity 87    
Minimum Humidity 61    
Precipitation  
Precipitation 0.00 in 0.00 in 0.02 in (1962)
Month to date precipitation T 0.01  
Year to date precipitation 7.31 13.09  
Since 1 July precipitation T 0.01  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 14 mph (West)    
Max Wind Speed 25 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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Astronomy

Aug. 09, 2014 Rise Set
Actual Time 6:20 AM PDT 8:09 PM PDT
Civil Twilight 5:51 AM PDT 8:37 PM PDT
Nautical Twilight 5:17 AM PDT 9:11 PM PDT
Astronomical Twilight 4:40 AM PDT 9:48 PM PDT
Moon 7:15 PM PDT (8/9) 5:07 AM PDT (8/9)
Length of Visible Light 14h 45m
Length of Day
13h 48m
Waxing Gibbous, 99% of the Moon is Illuminated
Aug 9
Waxing Gibbous
Aug 10
Full
Aug 17
Last Quarter
Aug 25
New
Sep 2
First 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 62.1 °F 54.0 °F 75% 29.91 in 10.0 mi West 6.9 mph - N/A   Clear
1:56 AM 61.0 °F 55.0 °F 81% 29.91 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
2:56 AM 60.1 °F 54.0 °F 80% 29.92 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
3:56 AM 60.1 °F 55.0 °F 83% 29.93 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
4:41 AM 59.0 °F 55.4 °F 88% 29.94 in 10.0 mi WSW 11.5 mph - N/A   Mostly Cloudy
4:56 AM 59.0 °F 55.0 °F 87% 29.94 in 10.0 mi West 16.1 mph - N/A   Mostly Cloudy
5:56 AM 59.0 °F 55.0 °F 87% 29.95 in 10.0 mi West 9.2 mph - N/A   Overcast
6:36 AM 59.0 °F 55.4 °F 88% 29.96 in 10.0 mi WSW 10.4 mph - N/A   Mostly Cloudy
6:56 AM 59.0 °F 55.0 °F 87% 29.97 in 10.0 mi WSW 11.5 mph - N/A   Mostly Cloudy
7:56 AM 59.0 °F 55.0 °F 87% 29.98 in 10.0 mi SW 10.4 mph - N/A   Mostly Cloudy
8:56 AM 59.0 °F 55.0 °F 87% 29.99 in 10.0 mi WSW 13.8 mph 19.6 mph N/A   Mostly Cloudy
9:56 AM 60.1 °F 55.9 °F 86% 29.98 in 10.0 mi WSW 10.4 mph - N/A   Mostly Cloudy
10:56 AM 64.0 °F 55.9 °F 75% 29.99 in 10.0 mi West 16.1 mph - N/A   Mostly Cloudy
11:17 AM 64.4 °F 55.4 °F 73% 29.99 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds
11:56 AM 66.9 °F 55.9 °F 68% 29.98 in 10.0 mi West 17.3 mph - N/A   Partly Cloudy
12:56 PM 69.1 °F 55.9 °F 63% 29.97 in 10.0 mi West 20.7 mph 25.3 mph N/A   Partly Cloudy
1:56 PM 68.0 °F 55.9 °F 65% 29.98 in 10.0 mi West 18.4 mph - N/A   Partly Cloudy
2:56 PM 66.9 °F 55.0 °F 66% 29.98 in 10.0 mi West 19.6 mph 25.3 mph N/A   Mostly Cloudy
3:35 PM 66.2 °F 55.4 °F 68% 29.97 in 10.0 mi WSW 18.4 mph 26.5 mph N/A   Mostly Cloudy
3:56 PM 66.0 °F 55.0 °F 68% 29.97 in 10.0 mi WSW 19.6 mph 28.8 mph N/A   Mostly Cloudy
4:13 PM 66.2 °F 55.4 °F 68% 29.96 in 10.0 mi West 21.9 mph 26.5 mph N/A   Scattered Clouds
4:56 PM 64.0 °F 55.0 °F 73% 29.96 in 10.0 mi WSW 23.0 mph 28.8 mph N/A   Scattered Clouds
5:39 PM 62.6 °F 55.4 °F 77% 29.95 in 10.0 mi WSW 15.0 mph 21.9 mph N/A   Mostly Cloudy
5:56 PM 62.1 °F 55.0 °F 78% 29.95 in 10.0 mi West 18.4 mph 24.2 mph N/A   Mostly Cloudy
6:56 PM 61.0 °F 55.0 °F 81% 29.95 in 10.0 mi WSW 13.8 mph 24.2 mph N/A   Mostly Cloudy
7:56 PM 61.0 °F 55.0 °F 81% 29.97 in 10.0 mi West 13.8 mph 24.2 mph N/A   Mostly Cloudy
8:56 PM 60.8 °F 55.4 °F 82% 29.98 in 10.0 mi West 12.7 mph - N/A   Overcast
9:56 PM 61.0 °F 55.9 °F 83% 29.99 in 10.0 mi WSW 12.7 mph - N/A   Overcast
10:56 PM 60.1 °F 55.9 °F 86% 30.00 in 10.0 mi West 12.7 mph - N/A   Overcast
11:56 PM 60.1 °F 55.9 °F 86% 29.99 in 10.0 mi SW 10.4 mph - N/A   Overcast