Weather History for San Francisco, CA

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Wednesday, January 12, 2000

  Actual Average Record
Temperature  
Mean Temperature 48 °F 50 °F  
Max Temperature 52 °F 56 °F 70 °F (2009)
Min Temperature 43 °F 44 °F 32 °F (1963)
Degree Days  
Heating Degree Days 18 15  
Month to date heating degree days 180  
Since 1 July heating degree days 1190  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 45 °F    
Average Humidity 88    
Maximum Humidity 97    
Minimum Humidity 80    
Precipitation  
Precipitation 0.01 in 0.14 in 1.56 in (1993)
Month to date precipitation 1.68  
Year to date precipitation 1.68  
Since 1 July precipitation 9.25  
Sea Level Pressure  
Sea Level Pressure 30.22 in    
Wind  
Wind Speed 3 mph (SSE)    
Max Wind Speed 9 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. 12, 2000 Rise Set
Actual Time 7:24 AM PST 5:11 PM PST
Civil Twilight 6:55 AM PST 5:40 PM PST
Nautical Twilight 6:23 AM PST 6:12 PM PST
Astronomical Twilight 5:51 AM PST 6:44 PM PST
Moon 11:03 AM PST (1/12) 11:07 PM PST (1/12)
Length of Visible Light 10h 44m
Length of Day
9h 47m
Waxing Crescent, 32% of the Moon is Illuminated
Jan 12
Waxing Crescent
Jan 14
First Quarter
Jan 20
Full
Jan 27
Last Quarter
Feb 5
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 - 45.0 °F 83% 30.18 in 10.0 mi WSW 5.8 mph - N/A   Mostly Cloudy
1:56 AM 46.9 °F - 45.0 °F 93% 30.19 in 10.0 mi WSW 5.8 mph - N/A   Mostly Cloudy
2:56 AM 46.0 °F 43.9 °F 44.1 °F 93% 30.19 in 10.0 mi SSW 4.6 mph - N/A   Mostly Cloudy
3:56 AM 45.0 °F - 44.1 °F 97% 30.19 in 10.0 mi Calm Calm - N/A   Clear
4:56 AM 44.1 °F 41.5 °F 42.1 °F 93% 30.20 in 10.0 mi SSW 4.6 mph - 0.01 in   Scattered Clouds
5:56 AM 43.0 °F 41.3 °F 42.1 °F 97% 30.21 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
6:56 AM 44.1 °F 42.5 °F 42.1 °F 93% 30.23 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
7:56 AM 46.0 °F - 44.1 °F 93% 30.23 in 10.0 mi Calm Calm - N/A   Overcast
8:56 AM 48.0 °F - 45.0 °F 89% 30.25 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:56 AM 50.0 °F - 45.0 °F 83% 30.26 in 10.0 mi Calm Calm - N/A   Overcast
10:56 AM 51.1 °F - 46.0 °F 83% 30.26 in 10.0 mi ENE 3.5 mph - N/A   Overcast
11:56 AM 51.1 °F - 46.9 °F 86% 30.23 in 10.0 mi East 6.9 mph - N/A   Overcast
12:56 PM 51.1 °F - 46.9 °F 86% 30.21 in 10.0 mi East 9.2 mph - N/A   Overcast
1:56 PM 51.1 °F - 46.9 °F 86% 30.21 in 10.0 mi East 8.1 mph - N/A   Overcast
2:56 PM 52.0 °F - 48.0 °F 86% 30.22 in 10.0 mi NE 3.5 mph - N/A   Overcast
3:56 PM 52.0 °F - 46.9 °F 83% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
4:56 PM 52.0 °F - 48.0 °F 86% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
5:56 PM 52.0 °F - 46.9 °F 83% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
6:56 PM 52.0 °F - 46.0 °F 80% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
7:56 PM 51.1 °F - 46.9 °F 86% 30.23 in 10.0 mi Calm Calm - N/A   Overcast
8:56 PM 50.0 °F - 46.0 °F 86% 30.23 in 10.0 mi Calm Calm - N/A   Overcast
9:56 PM 48.9 °F - 46.0 °F 90% 30.23 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:56 PM 48.9 °F - 45.0 °F 86% 30.24 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:56 PM 46.9 °F - 45.0 °F 93% 30.24 in 10.0 mi SSE 3.5 mph - N/A   Overcast