Weather History for KSFO - December, 2007

Change the Weather History Date:

Monday, December 17, 2007

  Actual Average Record
Temperature  
Mean Temperature 53 °F 50 °F  
Max Temperature 56 °F 56 °F 67 °F (1958)
Min Temperature 49 °F 44 °F 30 °F (1965)
Degree Days  
Heating Degree Days 12 15  
Month to date heating degree days 241 235  
Since 1 July heating degree days 801 799  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 126 164  
Growing Degree Days 1 (Base 50)    
Moisture  
Dew Point 46 °F    
Average Humidity 79    
Maximum Humidity 93    
Minimum Humidity 64    
Precipitation  
Precipitation 0.27 in 0.13 in 1.26 in (2005)
Month to date precipitation 0.83 2.01  
Year to date precipitation 9.83 18.63  
Since 1 July precipitation 3.54 5.55  
Snow  
Snow 0.00 in - 0.00 in ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 4 mph (ESE)    
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

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. 17, 2007 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 5:54 PM PST
Astronomical Twilight 5:44 AM PST 6:26 PM PST
Moon 12:15 PM PST (12/17) No Moon Set
Length of Visible Light 10h 33m
Length of Day
9h 34m
First Quarter, 55% of the Moon is Illuminated
Dec 17
First Quarter
Dec 23
Full
Dec 30
Last Quarter
Jan 8
New
Jan 15
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 50.0 °F 46.4 °F 87% 29.97 in 5.0 mi SE 9.2 mph - N/A Rain Light Rain
1:35 AM 50.0 °F 46.4 °F 87% 29.99 in 2.0 mi NW 6.9 mph - 0.07 in Rain Heavy Rain
1:49 AM 50.0 °F 48.2 °F 94% 29.99 in 2.0 mi Calm Calm - 0.15 in Rain Heavy Rain
1:56 AM 50.0 °F 48.0 °F 93% 29.99 in 3.0 mi ENE 4.6 mph - 0.17 in Rain Rain
2:15 AM 48.2 °F 46.4 °F 93% 29.99 in 5.0 mi NNE 5.8 mph - 0.03 in Rain Light Rain
2:56 AM 50.0 °F 46.0 °F 86% 29.99 in 6.0 mi ENE 5.8 mph - 0.06 in Rain Light Rain
3:04 AM 50.0 °F 46.4 °F 87% 29.99 in 10.0 mi ENE 4.6 mph - 0.00 in   Overcast
3:11 AM 50.0 °F 46.4 °F 87% 29.99 in 7.0 mi Calm Calm - 0.00 in Rain Light Rain
3:56 AM 48.9 °F 46.9 °F 93% 30.00 in 9.0 mi Calm Calm - 0.01 in   Overcast
4:56 AM 48.9 °F 46.9 °F 93% 29.99 in 8.0 mi SE 3.5 mph - N/A   Overcast
5:46 AM 48.2 °F 46.4 °F 93% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
5:56 AM 48.9 °F 46.9 °F 93% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
6:56 AM 50.0 °F 46.9 °F 89% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
7:48 AM 50.0 °F 46.4 °F 87% 30.03 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
7:56 AM 50.0 °F 46.9 °F 89% 30.03 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 50.0 °F 46.9 °F 89% 30.05 in 10.0 mi South 3.5 mph - N/A   Overcast
9:15 AM 50.0 °F 46.4 °F 87% 30.05 in 10.0 mi SSE 3.5 mph - N/A   Overcast
9:56 AM 51.1 °F 46.0 °F 83% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:56 AM 54.0 °F 48.9 °F 83% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:56 AM 54.0 °F 46.9 °F 77% 30.05 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
12:56 PM 54.0 °F 44.1 °F 69% 30.05 in 10.0 mi Variable 4.6 mph - N/A   Mostly Cloudy
1:56 PM 54.0 °F 44.1 °F 69% 30.04 in 10.0 mi East 3.5 mph - N/A   Overcast
2:56 PM 53.1 °F 46.9 °F 80% 30.03 in 10.0 mi ESE 4.6 mph - N/A   Overcast
3:56 PM 53.1 °F 46.0 °F 77% 30.03 in 10.0 mi ESE 5.8 mph - N/A   Overcast
4:56 PM 54.0 °F 44.1 °F 69% 30.02 in 10.0 mi Variable 6.9 mph - N/A   Overcast
5:56 PM 53.1 °F 42.1 °F 66% 30.02 in 10.0 mi SE 6.9 mph - N/A   Overcast
6:56 PM 53.6 °F 41.0 °F 62% 30.03 in 10.0 mi SE 6.9 mph - N/A   Overcast
7:56 PM 53.1 °F 42.1 °F 66% 30.03 in 10.0 mi ESE 9.2 mph - N/A   Overcast
8:56 PM 53.1 °F 42.1 °F 66% 30.04 in 10.0 mi SE 5.8 mph - N/A   Overcast
9:56 PM 53.1 °F 43.0 °F 69% 30.04 in 10.0 mi SE 6.9 mph - N/A   Overcast
10:56 PM 52.0 °F 45.0 °F 77% 30.04 in 10.0 mi SSE 5.8 mph - 0.01 in   Overcast
11:56 PM 51.1 °F 45.0 °F 80% 30.04 in 10.0 mi South 8.1 mph - N/A   Overcast