Weather History for KSFO - January, 2014

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Sunday, January 26, 2014

  Actual Average Record
Temperature  
Mean Temperature 57 °F 51 °F  
Max Temperature 66 °F 57 °F 66 °F (2014)
Min Temperature 48 °F 45 °F 30 °F (1949)
Degree Days  
Heating Degree Days 8 14  
Month to date heating degree days 255 385  
Since 1 July heating degree days 1223 1395  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Growing Degree Days 6 (Base 50)    
Moisture  
Dew Point 43 °F    
Average Humidity 65    
Maximum Humidity 83    
Minimum Humidity 46    
Precipitation  
Precipitation 0.00 in 0.13 in 1.52 in (1983)
Month to date precipitation 0.01 3.52  
Year to date precipitation 0.01 3.52  
Since 1 July precipitation 1.50 11.09  
Sea Level Pressure  
Sea Level Pressure 30.09 in    
Wind  
Wind Speed 6 mph (NW)    
Max Wind Speed 21 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 26, 2014 Rise Set
Actual Time 7:17 AM PST 5:26 PM PST
Civil Twilight 6:49 AM PST 5:54 PM PST
Nautical Twilight 6:18 AM PST 6:26 PM PST
Astronomical Twilight 5:47 AM PST 6:57 PM PST
Moon 3:00 AM PST (1/26) 1:21 PM PST (1/26)
Length of Visible Light 11h 05m
Length of Day
10h 09m
Waning Crescent, 23% of the Moon is Illuminated
Jan 26
Waning Crescent
Jan 30
New
Feb 6
First Quarter
Feb 14
Full
Feb 22
Last 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 54.0 °F 39.9 °F 59% 30.12 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 52.0 °F 37.0 °F 57% 30.12 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:56 AM 48.9 °F 33.1 °F 54% 30.12 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 48.9 °F 33.1 °F 54% 30.10 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 51.1 °F 35.1 °F 54% 30.09 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 AM 51.1 °F 37.0 °F 59% 30.10 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:56 AM 53.1 °F 42.1 °F 66% 30.11 in 10.0 mi North 3.5 mph - N/A   Mostly Cloudy
7:56 AM 53.1 °F 44.1 °F 71% 30.11 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 55.0 °F 46.0 °F 72% 30.12 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:56 AM 57.0 °F 46.9 °F 69% 30.14 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:56 AM 57.9 °F 46.9 °F 67% 30.13 in 10.0 mi East 3.5 mph - N/A   Mostly Cloudy
11:56 AM 57.9 °F 46.9 °F 67% 30.11 in 9.0 mi NE 4.6 mph - N/A   Scattered Clouds
12:56 PM 60.1 °F 46.0 °F 60% 30.08 in 10.0 mi North 3.5 mph - N/A   Scattered Clouds
1:56 PM 63.0 °F 41.0 °F 45% 30.04 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:56 PM 62.1 °F 46.9 °F 58% 30.03 in 10.0 mi NNE 5.8 mph - N/A   Scattered Clouds
3:56 PM 64.9 °F 46.0 °F 50% 30.04 in 10.0 mi WNW 12.7 mph - N/A   Scattered Clouds
4:56 PM 57.9 °F 46.0 °F 65% 30.05 in 10.0 mi WNW 12.7 mph - N/A   Scattered Clouds
5:56 PM 54.0 °F 46.9 °F 77% 30.06 in 10.0 mi WNW 17.3 mph - N/A   Partly Cloudy
6:56 PM 53.1 °F 46.9 °F 80% 30.06 in 10.0 mi WNW 16.1 mph - N/A   Partly Cloudy
7:56 PM 53.1 °F 48.0 °F 83% 30.06 in 10.0 mi WNW 13.8 mph - N/A   Partly Cloudy
8:56 PM 53.1 °F 48.0 °F 83% 30.09 in 10.0 mi WNW 15.0 mph - N/A   Partly Cloudy
9:56 PM 53.1 °F 46.9 °F 80% 30.09 in 10.0 mi West 15.0 mph - N/A   Partly Cloudy
10:56 PM 52.0 °F 46.0 °F 80% 30.11 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy
11:56 PM 51.1 °F 46.0 °F 83% 30.10 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy