Weather History for San Francisco, CA

Change the Weather History Date:

Sunday, December 30, 2012

  Actual Average Record
Temperature  
Mean Temperature 48 °F 50 °F  
Max Temperature 55 °F 56 °F 69 °F (1945)
Min Temperature 40 °F 44 °F 33 °F (1990)
Degree Days  
Heating Degree Days 17 15  
Month to date heating degree days 380 430  
Since 1 July heating degree days 975 994  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 86 164  
Moisture  
Dew Point 38 °F    
Average Humidity 70    
Maximum Humidity 89    
Minimum Humidity 50    
Precipitation  
Precipitation 0.00 in 0.14 in 2.19 in (1976)
Month to date precipitation 6.24 3.89  
Year to date precipitation 21.46 20.51  
Since 1 July precipitation 11.00 7.43  
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 4 mph (WNW)    
Max Wind Speed 15 mph    
Max Gust Speed 17 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport:

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. 30, 2012 Rise Set
Actual Time 7:24 AM PST 5:00 PM PST
Civil Twilight 6:54 AM PST 5:29 PM PST
Nautical Twilight 6:22 AM PST 6:02 PM PST
Astronomical Twilight 5:50 AM PST 6:34 PM PST
Moon 7:33 PM PST (12/30) 8:39 AM PST (12/30)
Length of Visible Light 10h 34m
Length of Day
9h 36m
Waning Gibbous, 95% of the Moon is Illuminated
Dec 30
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

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 45.0 °F 42.6 °F 41.0 °F 86% 30.07 in 10.0 mi SSE 4.6 mph - N/A   Clear
1:56 AM 43.0 °F - 39.0 °F 86% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 AM 43.0 °F - 39.0 °F 86% 30.08 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:23 AM 42.8 °F - 39.2 °F 87% 30.07 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:56 AM 43.0 °F - 39.0 °F 86% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:56 AM 41.0 °F 38.0 °F 37.9 °F 89% 30.06 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
5:56 AM 41.0 °F 39.0 °F 37.9 °F 89% 30.06 in 10.0 mi West 3.5 mph - N/A   Scattered Clouds
6:56 AM 42.1 °F - 39.0 °F 89% 30.08 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 43.0 °F - 39.0 °F 86% 30.08 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:56 AM 44.1 °F 42.5 °F 39.9 °F 85% 30.10 in 10.0 mi South 3.5 mph - N/A   Scattered Clouds
9:56 AM 46.0 °F - 39.9 °F 79% 30.12 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:33 AM 46.4 °F - 41.0 °F 81% 30.13 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:56 AM 48.0 °F - 42.1 °F 80% 30.13 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:56 AM 48.9 °F - 41.0 °F 74% 30.11 in 10.0 mi Calm Calm - N/A   Partly Cloudy
12:56 PM 51.1 °F - 39.9 °F 66% 30.08 in 10.0 mi North 5.8 mph - N/A   Partly Cloudy
1:56 PM 53.1 °F - 39.9 °F 61% 30.07 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:56 PM 55.0 °F - 37.0 °F 51% 30.08 in 10.0 mi North 3.5 mph - N/A   Partly Cloudy
3:56 PM 53.1 °F - 39.0 °F 59% 30.08 in 10.0 mi WNW 12.7 mph - N/A   Partly Cloudy
4:56 PM 51.1 °F - 39.9 °F 66% 30.09 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
5:56 PM 48.9 °F - 39.0 °F 69% 30.09 in 10.0 mi WSW 5.8 mph - N/A   Partly Cloudy
6:56 PM 48.0 °F - 39.9 °F 74% 30.11 in 10.0 mi West 8.1 mph - N/A   Clear
7:56 PM 48.9 °F - 39.0 °F 69% 30.12 in 10.0 mi WNW 8.1 mph - N/A   Clear
8:56 PM 46.9 °F - 37.9 °F 71% 30.13 in 10.0 mi West 5.8 mph - N/A   Clear
9:56 PM 50.0 °F - 33.1 °F 52% 30.16 in 10.0 mi WNW 4.6 mph - N/A   Clear
10:56 PM 50.0 °F - 32.0 °F 50% 30.18 in 10.0 mi West 5.8 mph - N/A   Clear
11:56 PM 48.0 °F - 32.0 °F 54% 30.18 in 10.0 mi NNW 5.8 mph - N/A   Clear