Weather History for KSFO - August, 2014

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Thursday, August 14, 2014

  Actual Average Record
Temperature  
Mean Temperature 67 °F 64 °F  
Max Temperature 74 °F 73 °F 85 °F (1995)
Min Temperature 60 °F 56 °F 47 °F (1946)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 1 25  
Since 1 June heating degree days 69 195  
Since 1 July heating degree days 20 90  
Cooling Degree Days 2 1  
Month to date cooling degree days 33 14  
Year to date cooling degree days 214 78  
Since 1 June cooling degree days 151 59  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 58 °F    
Average Humidity 76    
Maximum Humidity 90    
Minimum Humidity 61    
Precipitation  
Precipitation 0.00 in 0.00 in 0.13 in (1976)
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 29.94 in    
Wind  
Wind Speed 12 mph (WNW)    
Max Wind Speed 24 mph    
Max Gust Speed 28 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 14, 2014 Rise Set
Actual Time 6:24 AM PDT 8:03 PM PDT
Civil Twilight 5:56 AM PDT 8:30 PM PDT
Nautical Twilight 5:22 AM PDT 9:04 PM PDT
Astronomical Twilight 4:46 AM PDT 9:40 PM PDT
Moon 10:36 PM PDT (8/14) 11:00 AM PDT (8/14)
Length of Visible Light 14h 34m
Length of Day
13h 38m
Waning Gibbous, 78% of the Moon is Illuminated
Aug 14
Waning Gibbous
Aug 17
Last Quarter
Aug 25
New
Sep 2
First Quarter
Sep 8
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 57.0 °F 87% 29.95 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
1:56 AM 61.0 °F 57.0 °F 87% 29.94 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
2:56 AM 60.8 °F 57.2 °F 88% 29.94 in 10.0 mi WNW 8.1 mph - N/A   Clear
3:56 AM 61.0 °F 57.0 °F 87% 29.94 in 10.0 mi West 8.1 mph - N/A   Mostly Cloudy
4:56 AM 61.0 °F 57.0 °F 87% 29.94 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
5:56 AM 61.0 °F 57.9 °F 90% 29.94 in 10.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
6:56 AM 60.1 °F 57.9 °F 93% 29.95 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:56 AM 62.1 °F 57.0 °F 84% 29.97 in 10.0 mi WNW 4.6 mph - N/A   Mostly Cloudy
8:56 AM 63.0 °F 57.0 °F 81% 29.97 in 10.0 mi NNW 4.6 mph - N/A   Scattered Clouds
9:56 AM 64.9 °F 57.9 °F 78% 29.98 in 10.0 mi North 5.8 mph - N/A   Scattered Clouds
10:56 AM 68.0 °F 59.0 °F 73% 29.98 in 10.0 mi NW 11.5 mph - N/A   Scattered Clouds
11:56 AM 70.0 °F 57.9 °F 65% 29.97 in 10.0 mi WNW 13.8 mph - N/A   Scattered Clouds
12:56 PM 71.1 °F 59.0 °F 66% 29.95 in 10.0 mi NW 19.6 mph - N/A   Scattered Clouds
1:56 PM 72.0 °F 57.9 °F 61% 29.94 in 10.0 mi WNW 18.4 mph - N/A   Scattered Clouds
2:39 PM 71.6 °F 57.2 °F 60% 29.94 in 10.0 mi WNW 23.0 mph - N/A   Scattered Clouds
2:56 PM 72.0 °F 57.9 °F 61% 29.93 in 10.0 mi WNW 20.7 mph - N/A   Scattered Clouds
3:56 PM 72.0 °F 57.9 °F 61% 29.91 in 10.0 mi WNW 21.9 mph - N/A   Scattered Clouds
4:56 PM 71.1 °F 59.0 °F 66% 29.90 in 10.0 mi WNW 16.1 mph - N/A   Scattered Clouds
5:56 PM 68.0 °F 57.9 °F 70% 29.90 in 10.0 mi West 20.7 mph - N/A   Scattered Clouds
6:56 PM 66.0 °F 57.9 °F 75% 29.90 in 10.0 mi WNW 18.4 mph - N/A   Scattered Clouds
7:56 PM 64.0 °F 57.9 °F 80% 29.91 in 10.0 mi WNW 18.4 mph - N/A   Scattered Clouds
8:56 PM 62.1 °F 57.9 °F 86% 29.94 in 10.0 mi WNW 11.5 mph - N/A   Scattered Clouds
9:56 PM 62.1 °F 57.9 °F 86% 29.94 in 10.0 mi WNW 11.5 mph - N/A   Partly Cloudy
10:56 PM 61.0 °F 57.9 °F 90% 29.95 in 10.0 mi WNW 9.2 mph - N/A   Scattered Clouds
11:56 PM 61.0 °F 57.0 °F 87% 29.96 in 10.0 mi WNW 6.9 mph - N/A   Scattered Clouds