Weather History for KSFO - December, 2013

Change the Weather History Date:

Wednesday, December 4, 2013

  Actual Average Record
Temperature  
Mean Temperature 46 °F 52 °F  
Max Temperature 52 °F 58 °F 75 °F (1958)
Min Temperature 39 °F 46 °F 36 °F (2004)
Degree Days  
Heating Degree Days 19 13  
Month to date heating degree days 52 52  
Since 1 July heating degree days 553 616  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 164 164  
Moisture  
Dew Point 26 °F    
Average Humidity 46    
Maximum Humidity 62    
Minimum Humidity 30    
Precipitation  
Precipitation 0.00 in 0.11 in 1.56 in (1945)
Month to date precipitation T 0.43  
Year to date precipitation 3.03 17.05  
Since 1 July precipitation 1.14 3.97  
Sea Level Pressure  
Sea Level Pressure 30.04 in    
Wind  
Wind Speed 5 mph (NW)    
Max Wind Speed 14 mph    
Max Gust Speed 16 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport or City:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Dec. 04, 2013 Rise Set
Actual Time 7:08 AM PST 4:50 PM PST
Civil Twilight 6:39 AM PST 5:19 PM PST
Nautical Twilight 6:07 AM PST 5:52 PM PST
Astronomical Twilight 5:35 AM PST 6:24 PM PST
Moon 8:42 AM PST (12/4) 7:06 PM PST (12/4)
Length of Visible Light 10h 40m
Length of Day
9h 42m
Waxing Crescent, 5% of the Moon is Illuminated
Dec 4
Waxing Crescent
Dec 9
First Quarter
Dec 17
Full
Dec 25
Last Quarter
Jan 1
New

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 50.0 °F - 24.1 °F 36% 29.96 in 10.0 mi NW 11.5 mph - N/A   Clear
1:56 AM 45.0 °F 41.2 °F 21.0 °F 39% 29.98 in 10.0 mi West 6.9 mph - N/A   Clear
2:56 AM 43.0 °F 40.3 °F 23.0 °F 45% 29.99 in 10.0 mi West 4.6 mph - N/A   Clear
3:56 AM 42.1 °F 37.7 °F 24.1 °F 49% 29.99 in 10.0 mi West 6.9 mph - N/A   Clear
4:56 AM 41.0 °F 38.0 °F 28.0 °F 60% 29.99 in 10.0 mi West 4.6 mph - N/A   Clear
5:56 AM 41.0 °F 36.4 °F 28.9 °F 62% 30.00 in 10.0 mi West 6.9 mph - N/A   Clear
6:56 AM 44.1 °F 42.5 °F 21.9 °F 42% 30.03 in 10.0 mi WNW 3.5 mph - N/A   Clear
7:56 AM 48.0 °F - 28.0 °F 46% 30.04 in 10.0 mi North 9.2 mph - N/A   Clear
8:56 AM 48.0 °F - 25.0 °F 41% 30.06 in 10.0 mi North 12.7 mph - N/A   Clear
9:56 AM 48.0 °F - 21.9 °F 36% 30.08 in 10.0 mi North 10.4 mph - N/A   Clear
10:56 AM 50.0 °F - 21.0 °F 32% 30.08 in 10.0 mi ENE 4.6 mph - N/A   Partly Cloudy
11:56 AM 51.1 °F - 21.0 °F 31% 30.07 in 10.0 mi NE 3.5 mph - N/A   Partly Cloudy
12:56 PM 51.1 °F - 21.9 °F 32% 30.04 in 10.0 mi NE 4.6 mph - N/A   Clear
1:56 PM 51.1 °F - 24.1 °F 35% 30.02 in 10.0 mi ENE 3.5 mph - N/A   Clear
2:56 PM 52.0 °F - 25.0 °F 35% 30.02 in 10.0 mi ENE 3.5 mph - N/A   Clear
3:56 PM 52.0 °F - 26.1 °F 37% 30.02 in 10.0 mi Calm Calm - N/A   Clear
4:56 PM 48.9 °F - 27.0 °F 43% 30.02 in 10.0 mi West 9.2 mph - N/A   Clear
5:56 PM 48.0 °F - 28.9 °F 48% 30.03 in 10.0 mi West 8.1 mph - N/A   Clear
6:56 PM 46.9 °F - 30.0 °F 52% 30.04 in 10.0 mi West 4.6 mph - N/A   Clear
7:56 PM 46.0 °F 44.8 °F 30.9 °F 56% 30.05 in 10.0 mi NW 3.5 mph - N/A   Clear
8:56 PM 44.1 °F - 30.0 °F 58% 30.07 in 10.0 mi Calm Calm - N/A   Clear
9:56 PM 42.1 °F 40.2 °F 30.0 °F 62% 30.08 in 10.0 mi South 3.5 mph - N/A   Clear
10:56 PM 42.1 °F 39.2 °F 30.0 °F 62% 30.09 in 10.0 mi South 4.6 mph - N/A   Clear
11:56 PM 41.0 °F - 27.0 °F 57% 30.09 in 10.0 mi Calm Calm - N/A   Clear