Weather History for San Francisco, CA

Change the Weather History Date:

Tuesday, December 25, 2012

  Actual Average Record
Temperature  
Mean Temperature 49 °F 50 °F  
Max Temperature 54 °F 56 °F 68 °F (1967)
Min Temperature 44 °F 44 °F 31 °F (1990)
Degree Days  
Heating Degree Days 16 15  
Month to date heating degree days 300 355  
Since 1 July heating degree days 895 919  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 86 164  
Moisture  
Dew Point 42 °F    
Average Humidity 79    
Maximum Humidity 86    
Minimum Humidity 71    
Precipitation  
Precipitation 0.90 in 0.15 in 1.23 in (1968)
Month to date precipitation 5.76 3.19  
Year to date precipitation 20.98 19.81  
Since 1 July precipitation 10.52 6.73  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 7 mph (SW)    
Max Wind Speed 26 mph    
Max Gust Speed 36 mph    
Visibility 10 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:

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. 25, 2012 Rise Set
Actual Time 7:22 AM PST 4:57 PM PST
Civil Twilight 6:53 AM PST 5:26 PM PST
Nautical Twilight 6:20 AM PST 5:59 PM PST
Astronomical Twilight 5:48 AM PST 6:31 PM PST
Moon 3:08 PM PST (12/25) 5:00 AM PST (12/25)
Length of Visible Light 10h 33m
Length of Day
9h 34m
Waxing Gibbous, 94% of the Moon is Illuminated
Dec 25
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First 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 46.0 °F - 39.0 °F 76% 30.15 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:56 AM 45.0 °F - 37.9 °F 76% 30.14 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 AM 46.9 °F - 39.0 °F 74% 30.13 in 10.0 mi SE 6.9 mph - N/A   Mostly Cloudy
3:56 AM 46.0 °F 43.1 °F 39.9 °F 79% 30.09 in 10.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
4:56 AM 46.0 °F - 37.9 °F 73% 30.07 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 AM 45.0 °F 41.2 °F 39.0 °F 80% 30.10 in 10.0 mi West 6.9 mph - N/A   Overcast
6:56 AM 46.9 °F - 39.0 °F 74% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
7:56 AM 46.9 °F - 39.0 °F 74% 30.10 in 10.0 mi Calm Calm - N/A   Overcast
8:56 AM 46.9 °F - 39.9 °F 77% 30.11 in 10.0 mi SSE 5.8 mph - 0.02 in Rain Light Rain
9:56 AM 46.9 °F - 41.0 °F 80% 30.09 in 10.0 mi SE 10.4 mph - 0.02 in   Overcast
10:56 AM 46.9 °F - 39.9 °F 77% 30.04 in 10.0 mi SE 9.2 mph - N/A   Overcast
11:56 AM 48.0 °F - 39.9 °F 74% 30.01 in 10.0 mi SE 8.1 mph - 0.00 in Rain Light Rain
12:56 PM 48.9 °F - 41.0 °F 74% 29.96 in 10.0 mi ENE 5.8 mph - 0.03 in Rain Light Rain
1:56 PM 48.9 °F - 42.1 °F 77% 29.94 in 10.0 mi NNE 6.9 mph - 0.02 in Rain Light Rain
2:56 PM 48.9 °F - 44.1 °F 83% 29.89 in 7.0 mi Calm Calm - 0.07 in Rain Light Rain
3:31 PM 48.2 °F - 42.8 °F 82% 29.87 in 10.0 mi SW 4.6 mph - N/A   Overcast
3:54 PM 50.0 °F - 44.6 °F 82% 29.86 in 10.0 mi West 6.9 mph - 0.01 in Rain Light Rain
3:56 PM 50.0 °F - 44.1 °F 80% 29.86 in 10.0 mi West 6.9 mph - 0.01 in Rain Light Rain
4:56 PM 50.0 °F - 45.0 °F 83% 29.84 in 5.0 mi ENE 9.2 mph - 0.24 in Rain Heavy Rain
6:56 PM 52.0 °F - 46.9 °F 83% 29.79 in 9.0 mi SE 11.5 mph - 0.03 in Rain Rain
7:56 PM 54.0 °F - 48.0 °F 80% 29.81 in 6.0 mi WSW 15.0 mph 24.2 mph 0.25 in Rain Rain
8:19 PM 53.6 °F - 46.4 °F 77% 29.82 in 10.0 mi WSW 16.1 mph - 0.03 in   Mostly Cloudy
8:56 PM 54.0 °F - 46.9 °F 77% 29.83 in 10.0 mi WSW 15.0 mph 24.2 mph 0.03 in   Mostly Cloudy
9:37 PM 53.6 °F - 44.6 °F 72% 29.85 in 8.0 mi West 25.3 mph 35.7 mph 0.00 in Rain Light Rain
9:51 PM 51.8 °F - 44.6 °F 76% 29.85 in 10.0 mi WSW 12.7 mph 23.0 mph 0.00 in Rain Light Rain
9:56 PM 52.0 °F - 46.0 °F 80% 29.85 in 10.0 mi West 11.5 mph - 0.00 in Rain Light Rain
10:56 PM 53.1 °F - 45.0 °F 74% 29.87 in 10.0 mi West 9.2 mph - 0.00 in   Mostly Cloudy
11:56 PM 52.0 °F - 43.0 °F 71% 29.88 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds