San Francisco, CA

4:56 AM PDT on April 24, 2018 (GMT -0700)
San Francisco International

Weather History for KSFO - December, 2014

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Wednesday, December 17, 2014

  Actual Average Record
Temperature  
Mean Temperature 55 °F 50 °F  
Max Temperature 60 °F 56 °F 67 °F (1958)
Min Temperature 50 °F 44 °F 30 °F (1965)
Degree Days  
Heating Degree Days 10 15  
Month to date heating degree days 99 235  
Since 1 July heating degree days 287 799  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 497 164  
Growing Degree Days 5 (Base 50)    
Moisture  
Dew Point 51 °F    
Average Humidity 84    
Maximum Humidity 100    
Minimum Humidity 67    
Precipitation  
Precipitation 0.21 in 0.13 in 1.26 in (2005)
Month to date precipitation 10.18 2.01  
Year to date precipitation 20.21 18.63  
Since 1 July precipitation 12.90  
Sea Level Pressure  
Sea Level Pressure 30.03 in    
Wind  
Wind Speed 6 mph (SSE)    
Max Wind Speed 20 mph    
Max Gust Speed 24 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Dec. 17, 2014 Rise Set
Actual Time 7:18 AM PST 4:52 PM PST
Civil Twilight 6:49 AM PST 5:22 PM PST
Nautical Twilight 6:16 AM PST 5:55 PM PST
Astronomical Twilight 5:44 AM PST 6:26 PM PST
Moon 2:41 AM PST (12/17) 1:55 PM PST (12/17)
Length of Visible Light 10h 32m
Length of Day
9h 34m
Waning Crescent, 20% of the Moon is Illuminated
Dec 17
Waning Crescent
Dec 21
New
Dec 28
First Quarter
Jan 4
Full
Jan 13
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 51.1 °F 51.1 °F 100% 29.95 in 10.0 mi South 4.6 mph - 0.02 in Rain Light Rain
1:56 AM 52.0 °F 52.0 °F 100% 29.96 in 10.0 mi NNE 3.5 mph - 0.03 in Rain Light Rain
2:56 AM 50.0 °F 50.0 °F 100% 29.97 in 10.0 mi South 4.6 mph - 0.00 in   Scattered Clouds
3:56 AM 51.1 °F 51.1 °F 100% 29.97 in 10.0 mi Calm Calm - N/A   Overcast
4:56 AM 51.1 °F 51.1 °F 100% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
5:56 AM 51.1 °F 51.1 °F 100% 29.99 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:56 AM 53.1 °F 52.0 °F 96% 30.01 in 10.0 mi North 3.5 mph - 0.00 in Rain Light Rain
7:56 AM 52.0 °F 52.0 °F 100% 30.03 in 10.0 mi South 3.5 mph - 0.00 in   Mostly Cloudy
8:56 AM 54.0 °F 53.1 °F 97% 30.05 in 10.0 mi SSE 4.6 mph - N/A   Scattered Clouds
9:56 AM 55.9 °F 52.0 °F 87% 30.08 in 10.0 mi SE 6.9 mph - N/A   Overcast
10:56 AM 57.9 °F 51.1 °F 78% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
11:56 AM 59.0 °F 48.0 °F 67% 30.06 in 10.0 mi SW 8.1 mph - N/A   Overcast
12:56 PM 59.0 °F 48.0 °F 67% 30.05 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy
1:56 PM 57.9 °F 50.0 °F 75% 30.03 in 10.0 mi SW 4.6 mph - 0.01 in   Mostly Cloudy
2:56 PM 57.9 °F 48.9 °F 72% 30.02 in 10.0 mi Variable 5.8 mph - N/A   Overcast
3:56 PM 57.9 °F 48.0 °F 70% 30.04 in 10.0 mi South 6.9 mph - 0.00 in Rain Light Rain
4:56 PM 55.9 °F 48.9 °F 77% 30.04 in 10.0 mi SSE 3.5 mph - 0.03 in Rain Light Rain
5:56 PM 55.9 °F 52.0 °F 87% 30.04 in 9.0 mi ESE 8.1 mph - 0.02 in Rain Light Rain
6:51 PM 55.4 °F 53.6 °F 94% 30.05 in 10.0 mi SE 11.5 mph - 0.01 in Rain Light Rain
6:56 PM 54.0 °F 53.1 °F 97% 30.06 in 10.0 mi SSE 9.2 mph - 0.01 in Rain Light Rain
7:19 PM 53.6 °F 53.6 °F 100% 30.06 in 9.0 mi SSE 10.4 mph - 0.01 in Rain Light Rain
7:56 PM 54.0 °F 52.0 °F 93% 30.06 in 10.0 mi SE 8.1 mph - 0.01 in   Overcast
8:23 PM 53.6 °F 53.6 °F 100% 30.06 in 10.0 mi SSE 6.9 mph - 0.00 in Rain Light Rain
8:56 PM 53.1 °F 52.0 °F 96% 30.06 in 5.0 mi ESE 12.7 mph - 0.01 in Rain Light Rain
9:56 PM 53.1 °F 51.1 °F 93% 30.06 in 5.0 mi ESE 16.1 mph - 0.01 in Rain Light Rain
10:56 PM 53.1 °F 51.1 °F 93% 30.06 in 6.0 mi ESE 15.0 mph - 0.05 in Rain Light Rain
11:56 PM 53.1 °F 52.0 °F 96% 30.06 in 7.0 mi ESE 10.4 mph - 0.01 in Rain Rain