San Francisco, CA

4:15 PM PDT on August 20, 2017 (GMT -0700)
San Francisco International

Weather History for KSFO - January, 2008

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Tuesday, January 1, 2008

  Actual Average Record
Temperature  
Mean Temperature 46 °F 50 °F  
Max Temperature 54 °F 56 °F 68 °F (1996)
Min Temperature 39 °F 44 °F 31 °F (1952)
Degree Days  
Heating Degree Days 18 15  
Month to date heating degree days 15  
Since 1 July heating degree days 1025  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 37 °F    
Average Humidity 70    
Maximum Humidity 83    
Minimum Humidity 59    
Precipitation  
Precipitation 0.00 in 0.14 in 2.16 in (2004)
Month to date precipitation 0.14  
Year to date precipitation 0.14  
Sea Level Pressure  
Sea Level Pressure 30.22 in    
Wind  
Wind Speed 5 mph (SE)    
Max Wind Speed 13 mph    
Max Gust Speed -    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Jan. 01, 2008 Rise Set
Actual Time 7:24 AM PST 5:01 PM PST
Civil Twilight 6:55 AM PST 5:30 PM PST
Nautical Twilight 6:22 AM PST 6:03 PM PST
Astronomical Twilight 5:50 AM PST 6:35 PM PST
Moon 1:22 AM PST (1/1) 12:14 PM PST (1/1)
Length of Visible Light 10h 35m
Length of Day
9h 37m
Last Quarter, 36% of the Moon is Illuminated
Jan 1
Last Quarter
Jan 8
New
Jan 15
First Quarter
Jan 22
Full
Jan 29
Last Quarter

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 46.9 °F - 33.1 °F 59% 30.25 in 10.0 mi ENE 12.7 mph - N/A   Partly Cloudy
1:56 AM 45.0 °F 43.5 °F 35.1 °F 68% 30.25 in 10.0 mi East 3.5 mph - N/A   Clear
2:56 AM 41.0 °F - 33.1 °F 73% 30.25 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 39.9 °F 36.7 °F 33.1 °F 77% 30.25 in 10.0 mi South 4.6 mph - N/A   Clear
4:56 AM 39.9 °F 35.1 °F 32.0 °F 73% 30.26 in 10.0 mi SSE 6.9 mph - N/A   Clear
5:56 AM 45.0 °F 40.6 °F 36.0 °F 71% 30.27 in 10.0 mi East 8.1 mph - N/A   Clear
6:56 AM 39.9 °F 36.7 °F 35.1 °F 83% 30.28 in 10.0 mi SE 4.6 mph - N/A   Clear
7:56 AM 39.9 °F 35.1 °F 34.0 °F 79% 30.28 in 10.0 mi SSE 6.9 mph - N/A   Mostly Cloudy
8:56 AM 44.1 °F 41.5 °F 35.1 °F 71% 30.29 in 10.0 mi SE 4.6 mph - N/A   Scattered Clouds
9:56 AM 46.0 °F 43.1 °F 35.1 °F 66% 30.30 in 9.0 mi SE 5.8 mph - N/A   Scattered Clouds
10:56 AM 48.0 °F - 36.0 °F 63% 30.29 in 10.0 mi SSE 3.5 mph - N/A   Scattered Clouds
11:56 AM 50.0 °F - 37.9 °F 63% 30.27 in 9.0 mi Calm Calm - N/A   Scattered Clouds
12:56 PM 52.0 °F - 39.0 °F 61% 30.24 in 10.0 mi ESE 3.5 mph - N/A   Scattered Clouds
1:56 PM 54.0 °F - 39.9 °F 59% 30.21 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 PM 53.1 °F - 39.0 °F 59% 30.19 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:56 PM 53.1 °F - 41.0 °F 64% 30.18 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
4:56 PM 51.1 °F - 39.9 °F 66% 30.18 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 PM 52.0 °F - 39.0 °F 61% 30.17 in 10.0 mi SE 3.5 mph - N/A   Scattered Clouds
6:56 PM 50.0 °F - 39.9 °F 68% 30.17 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:56 PM 48.9 °F - 39.9 °F 71% 30.16 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:56 PM 46.9 °F - 39.9 °F 77% 30.16 in 9.0 mi SSE 3.5 mph - N/A   Partly Cloudy
9:56 PM 46.9 °F - 41.0 °F 80% 30.17 in 9.0 mi Calm Calm - N/A   Partly Cloudy
10:56 PM 46.0 °F 43.9 °F 41.0 °F 83% 30.17 in 10.0 mi SE 4.6 mph - N/A   Partly Cloudy
11:56 PM 44.1 °F 41.5 °F 37.9 °F 79% 30.16 in 9.0 mi South 4.6 mph - N/A   Clear