San Francisco, CA

4:31 PM PDT on September 27, 2016 (GMT -0700)
San Francisco International

Weather History for KSFO - January, 2013

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Tuesday, January 8, 2013

  Actual Average Record
Temperature  
Mean Temperature 50 °F 50 °F  
Max Temperature 56 °F 56 °F 70 °F (1962)
Min Temperature 43 °F 44 °F 30 °F (1955)
Degree Days  
Heating Degree Days 15 15  
Month to date heating degree days 137 120  
Since 1 July heating degree days 1132 1130  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 44 °F    
Average Humidity 79    
Maximum Humidity 92    
Minimum Humidity 66    
Precipitation  
Precipitation 0.00 in 0.14 in 1.33 in (1979)
Month to date precipitation 0.06 1.10  
Year to date precipitation 0.06 1.10  
Since 1 July precipitation 11.06  
Sea Level Pressure  
Sea Level Pressure 30.18 in    
Wind  
Wind Speed 2 mph (NNE)    
Max Wind Speed 7 mph    
Max Gust Speed 9 mph    
Visibility 9 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. 08, 2013 Rise Set
Actual Time 7:24 AM PST 5:08 PM PST
Civil Twilight 6:55 AM PST 5:37 PM PST
Nautical Twilight 6:23 AM PST 6:09 PM PST
Astronomical Twilight 5:51 AM PST 6:41 PM PST
Moon 4:04 AM PST (1/8) 2:15 PM PST (1/8)
Length of Visible Light 10h 41m
Length of Day
9h 43m
Waning Crescent, 13% of the Moon is Illuminated
Jan 8
Waning Crescent
Jan 11
New
Jan 18
First Quarter
Jan 26
Full
Feb 3
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 48.9 °F - 45.0 °F 86% 30.20 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:56 AM 46.0 °F - 43.0 °F 89% 30.20 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:56 AM 45.0 °F - 43.0 °F 93% 30.19 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:56 AM 44.1 °F 42.5 °F 42.1 °F 93% 30.19 in 10.0 mi WNW 3.5 mph - N/A   Partly Cloudy
4:56 AM 43.0 °F 40.3 °F 39.9 °F 89% 30.19 in 10.0 mi SSW 4.6 mph - N/A   Partly Cloudy
5:56 AM 45.0 °F - 42.1 °F 90% 30.19 in 7.0 mi Calm Calm - N/A   Partly Cloudy
6:56 AM 46.0 °F - 43.0 °F 89% 30.20 in 9.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 46.0 °F - 43.0 °F 89% 30.22 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 48.0 °F - 45.0 °F 89% 30.24 in 8.0 mi ESE 3.5 mph - N/A   Scattered Clouds
9:56 AM 51.1 °F - 46.0 °F 83% 30.25 in 4.0 mi Calm Calm - N/A   Haze
10:56 AM 52.0 °F - 46.0 °F 80% 30.23 in 4.0 mi NE 4.6 mph - N/A   Haze
11:56 AM 53.1 °F - 46.0 °F 77% 30.20 in 5.0 mi NNE 3.5 mph - N/A   Haze
12:56 PM 53.1 °F - 46.0 °F 77% 30.17 in 9.0 mi NNE 4.6 mph - N/A   Partly Cloudy
1:56 PM 54.0 °F - 46.9 °F 77% 30.16 in 9.0 mi ENE 3.5 mph - N/A   Partly Cloudy
2:56 PM 55.0 °F - 46.0 °F 72% 30.16 in 10.0 mi NNE 3.5 mph - N/A   Partly Cloudy
3:56 PM 55.9 °F - 45.0 °F 67% 30.15 in 10.0 mi NE 3.5 mph - N/A   Scattered Clouds
4:56 PM 53.1 °F - 46.0 °F 77% 30.14 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 PM 54.0 °F - 44.1 °F 69% 30.14 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 PM 52.0 °F - 46.0 °F 80% 30.15 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:56 PM 51.1 °F - 44.1 °F 77% 30.16 in 10.0 mi WNW 5.8 mph - N/A   Scattered Clouds
8:56 PM 51.1 °F - 46.0 °F 83% 30.15 in 8.0 mi NW 4.6 mph - N/A   Partly Cloudy
9:56 PM 48.9 °F - 44.1 °F 83% 30.16 in 9.0 mi South 4.6 mph - N/A   Partly Cloudy
10:56 PM 48.9 °F - 44.1 °F 83% 30.16 in 9.0 mi Calm Calm - N/A   Scattered Clouds
11:56 PM 48.0 °F - 43.0 °F 83% 30.16 in 9.0 mi South 3.5 mph - N/A   Scattered Clouds