Weather History for KSFO - August, 2014

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Saturday, August 16, 2014

  Actual Average Record
Temperature  
Mean Temperature 66 °F 64 °F  
Max Temperature 73 °F 73 °F 86 °F (1960)
Min Temperature 59 °F 56 °F 48 °F (1955)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 1 27  
Since 1 June heating degree days 69 197  
Since 1 July heating degree days 20 92  
Cooling Degree Days 1 1  
Month to date cooling degree days 36 16  
Year to date cooling degree days 217 80  
Since 1 June cooling degree days 154 61  
Growing Degree Days 16 (Base 50)    
Moisture  
Dew Point 58 °F    
Average Humidity 79    
Maximum Humidity 97    
Minimum Humidity 61    
Precipitation  
Precipitation 0.00 in 0.01 in 0.01 in (1941)
Month to date precipitation T 0.02  
Year to date precipitation 7.31 13.10  
Since 1 July precipitation T 0.02  
Sea Level Pressure  
Sea Level Pressure 30.01 in    
Wind  
Wind Speed 11 mph (NW)    
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. 16, 2014 Rise Set
Actual Time 6:26 AM PDT 8:00 PM PDT
Civil Twilight 5:58 AM PDT 8:28 PM PDT
Nautical Twilight 5:24 AM PDT 9:01 PM PDT
Astronomical Twilight 4:49 AM PDT 9:36 PM PDT
Moon 11:56 PM PDT (8/16) 1:09 PM PDT (8/16)
Length of Visible Light 14h 29m
Length of Day
13h 34m
Waning Gibbous, 58% of the Moon is Illuminated
Aug 16
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 60.1 °F 57.9 °F 93% 30.00 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
1:56 AM 60.1 °F 57.9 °F 93% 29.99 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
2:07 AM 60.8 °F 57.2 °F 88% 29.99 in 10.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
2:56 AM 61.0 °F 59.0 °F 93% 30.00 in 10.0 mi WNW 4.6 mph - N/A   Overcast
3:38 AM 62.6 °F 59.0 °F 88% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
3:56 AM 62.1 °F 59.0 °F 90% 30.00 in 10.0 mi South 3.5 mph - N/A   Overcast
4:56 AM 61.0 °F 57.9 °F 90% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
5:56 AM 61.0 °F 57.9 °F 90% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
6:56 AM 61.0 °F 57.9 °F 90% 30.03 in 10.0 mi SSW 4.6 mph - N/A   Overcast
7:56 AM 61.0 °F 57.9 °F 90% 30.04 in 10.0 mi Variable 3.5 mph - N/A   Overcast
8:56 AM 62.1 °F 57.9 °F 86% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:56 AM 66.0 °F 59.0 °F 78% 30.05 in 10.0 mi NE 5.8 mph - N/A   Mostly Cloudy
10:09 AM 66.2 °F 59.0 °F 78% 30.05 in 10.0 mi NE 4.6 mph - N/A   Scattered Clouds
10:56 AM 68.0 °F 60.1 °F 76% 30.05 in 10.0 mi NE 5.8 mph - N/A   Partly Cloudy
11:56 AM 69.1 °F 60.1 °F 73% 30.04 in 10.0 mi NNE 5.8 mph - N/A   Partly Cloudy
12:56 PM 71.1 °F 61.0 °F 70% 30.03 in 10.0 mi North 9.2 mph - N/A   Partly Cloudy
1:56 PM 72.0 °F 59.0 °F 64% 30.01 in 10.0 mi NW 17.3 mph - N/A   Partly Cloudy
2:56 PM 73.0 °F 59.0 °F 61% 30.00 in 10.0 mi WNW 19.6 mph - N/A   Partly Cloudy
3:56 PM 71.1 °F 57.9 °F 63% 29.98 in 10.0 mi WNW 23.0 mph - N/A   Partly Cloudy
4:56 PM 69.1 °F 57.9 °F 68% 29.97 in 10.0 mi WNW 19.6 mph - N/A   Partly Cloudy
5:56 PM 66.9 °F 57.9 °F 73% 29.97 in 10.0 mi WNW 20.7 mph - N/A   Partly Cloudy
6:56 PM 64.9 °F 57.0 °F 75% 29.96 in 10.0 mi WNW 18.4 mph - N/A   Partly Cloudy
7:56 PM 62.1 °F 57.0 °F 84% 29.98 in 10.0 mi WNW 19.6 mph - N/A   Partly Cloudy
8:56 PM 61.0 °F 57.0 °F 87% 29.99 in 10.0 mi WNW 17.3 mph - N/A   Partly Cloudy
9:56 PM 60.1 °F 57.0 °F 90% 30.01 in 10.0 mi West 19.6 mph - N/A   Partly Cloudy
10:56 PM 60.1 °F 57.0 °F 90% 30.01 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy
11:56 PM 60.1 °F 57.0 °F 90% 30.01 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy