Weather History for KSFO - January, 2014

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Monday, January 13, 2014

  Actual Average Record
Temperature  
Mean Temperature 55 °F 50 °F  
Max Temperature 67 °F 56 °F 72 °F (2009)
Min Temperature 42 °F 44 °F 29 °F (1963)
Degree Days  
Heating Degree Days 10 15  
Month to date heating degree days 147 195  
Since 1 July heating degree days 1115 1205  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 37 °F    
Average Humidity 50    
Maximum Humidity 71    
Minimum Humidity 28    
Precipitation  
Precipitation 0.00 in 0.14 in 1.97 in (1993)
Month to date precipitation 0.01 1.82  
Year to date precipitation 0.01 1.82  
Since 1 July precipitation 1.50 9.39  
Sea Level Pressure  
Sea Level Pressure 30.40 in    
Wind  
Wind Speed 3 mph (East)    
Max Wind Speed 18 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 13, 2014 Rise Set
Actual Time 7:23 AM PST 5:12 PM PST
Civil Twilight 6:55 AM PST 5:41 PM PST
Nautical Twilight 6:22 AM PST 6:13 PM PST
Astronomical Twilight 5:51 AM PST 6:45 PM PST
Moon 3:32 PM PST (1/13) 5:17 AM PST (1/13)
Length of Visible Light 10h 46m
Length of Day
9h 49m
Waxing Gibbous, 95% of the Moon is Illuminated
Jan 13
Waxing Gibbous
Jan 15
Full
Jan 23
Last Quarter
Jan 30
New
Feb 6
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 51.1 °F 39.0 °F 63% 30.35 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 46.0 °F 35.1 °F 66% 30.36 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 48.0 °F 39.0 °F 71% 30.37 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 45.0 °F 34.0 °F 65% 30.38 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 46.9 °F 35.1 °F 63% 30.38 in 10.0 mi SE 6.9 mph - N/A   Clear
5:56 AM 54.0 °F 37.0 °F 53% 30.39 in 10.0 mi East 6.9 mph - N/A   Clear
6:56 AM 54.0 °F 41.0 °F 62% 30.40 in 10.0 mi ENE 15.0 mph - N/A   Partly Cloudy
7:56 AM 54.0 °F 37.9 °F 55% 30.42 in 10.0 mi East 5.8 mph - N/A   Partly Cloudy
8:56 AM 57.0 °F 37.0 °F 47% 30.45 in 10.0 mi ESE 4.6 mph - N/A   Partly Cloudy
9:56 AM 60.1 °F 36.0 °F 41% 30.47 in 10.0 mi NE 6.9 mph - N/A   Partly Cloudy
10:56 AM 60.1 °F 37.9 °F 44% 30.46 in 10.0 mi ESE 3.5 mph - N/A   Partly Cloudy
11:56 AM 60.1 °F 42.1 °F 51% 30.43 in 10.0 mi Calm Calm - N/A   Partly Cloudy
12:56 PM 62.1 °F 39.0 °F 43% 30.40 in 10.0 mi ENE 3.5 mph - N/A   Partly Cloudy
1:56 PM 66.0 °F 32.0 °F 28% 30.39 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:56 PM 66.0 °F 34.0 °F 30% 30.38 in 10.0 mi Calm Calm - N/A   Clear
3:56 PM 64.9 °F 35.1 °F 33% 30.38 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:56 PM 60.1 °F 39.9 °F 47% 30.38 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:56 PM 57.0 °F 44.1 °F 62% 30.39 in 10.0 mi NNE 5.8 mph - N/A   Partly Cloudy
6:56 PM 59.0 °F 39.0 °F 48% 30.40 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:56 PM 57.9 °F 37.0 °F 46% 30.40 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
8:56 PM 57.0 °F 36.0 °F 45% 30.40 in 10.0 mi Calm Calm - N/A   Partly Cloudy
9:56 PM 55.9 °F 37.0 °F 49% 30.40 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:56 PM 52.0 °F 37.9 °F 59% 30.40 in 10.0 mi Calm Calm - N/A   Clear
11:56 PM 54.0 °F 42.1 °F 64% 30.40 in 10.0 mi Calm Calm - N/A   Clear