Weather History for San Francisco, CA

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Tuesday, December 24, 2013

  Actual Average Record
Temperature  
Mean Temperature 52 °F 50 °F  
Max Temperature 59 °F 56 °F 65 °F (1967)
Min Temperature 45 °F 44 °F 29 °F (1990)
Degree Days  
Heating Degree Days 13 15  
Month to date heating degree days 376 340  
Since 1 July heating degree days 877 904  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 164 164  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 41 °F    
Average Humidity 64    
Maximum Humidity 76    
Minimum Humidity 51    
Precipitation  
Precipitation 0.00 in 0.15 in 2.00 in (1983)
Month to date precipitation 0.35 3.04  
Year to date precipitation 3.38 19.66  
Since 1 July precipitation 1.49 6.58  
Sea Level Pressure  
Sea Level Pressure 30.27 in    
Wind  
Wind Speed 2 mph (NW)    
Max Wind Speed 8 mph    
Max Gust Speed 24 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 24, 2013 Rise Set
Actual Time 7:22 AM PST 4:56 PM PST
Civil Twilight 6:52 AM PST 5:25 PM PST
Nautical Twilight 6:20 AM PST 5:58 PM PST
Astronomical Twilight 5:48 AM PST 6:30 PM PST
Moon No Moon Rise 11:26 AM PST (12/24)
Length of Visible Light 10h 32m
Length of Day
9h 34m
Waning Gibbous, 57% of the Moon is Illuminated
Dec 24
Waning Gibbous
Dec 25
Last Quarter
Jan 1
New
Jan 7
First Quarter
Jan 15
Full

Hourly Weather History & Observations

Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 50.0 °F 39.0 °F 66% 30.34 in 9.0 mi South 4.6 mph - N/A   Partly Cloudy
1:56 AM 46.9 °F 37.9 °F 71% 30.34 in 9.0 mi Calm Calm - N/A   Partly Cloudy
2:56 AM 48.0 °F 39.9 °F 74% 30.34 in 8.0 mi Calm Calm - N/A   Partly Cloudy
3:56 AM 48.9 °F 37.9 °F 66% 30.33 in 8.0 mi Calm Calm - N/A   Partly Cloudy
4:56 AM 46.0 °F 37.9 °F 73% 30.32 in 9.0 mi Calm Calm - N/A   Partly Cloudy
5:56 AM 46.0 °F 37.9 °F 73% 30.31 in 9.0 mi Calm Calm - N/A   Partly Cloudy
6:56 AM 48.0 °F 39.0 °F 71% 30.31 in 9.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 46.9 °F 39.9 °F 77% 30.31 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
8:56 AM 51.1 °F 41.0 °F 68% 30.32 in 8.0 mi Calm Calm - N/A   Partly Cloudy
9:56 AM 52.0 °F 41.0 °F 66% 30.32 in 8.0 mi NE 3.5 mph - N/A   Partly Cloudy
10:56 AM 54.0 °F 43.0 °F 66% 30.31 in 8.0 mi Calm Calm - N/A   Partly Cloudy
11:56 AM 55.0 °F 44.1 °F 67% 30.27 in 8.0 mi NE 3.5 mph - N/A   Partly Cloudy
12:56 PM 55.9 °F 45.0 °F 67% 30.25 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
1:56 PM 57.9 °F 46.0 °F 65% 30.22 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:56 PM 55.9 °F 46.9 °F 72% 30.22 in 10.0 mi NNE 6.9 mph - N/A   Scattered Clouds
3:56 PM 57.0 °F 45.0 °F 64% 30.22 in 10.0 mi North 5.8 mph - N/A   Scattered Clouds
4:56 PM 57.0 °F 43.0 °F 59% 30.21 in 10.0 mi NNW 5.8 mph - N/A   Scattered Clouds
5:56 PM 57.9 °F 39.9 °F 51% 30.21 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
6:56 PM 54.0 °F 42.1 °F 64% 30.21 in 10.0 mi SSW 4.6 mph - N/A   Clear
7:56 PM 54.0 °F 42.1 °F 64% 30.22 in 10.0 mi Calm Calm - N/A   Clear
8:56 PM 51.1 °F 39.0 °F 63% 30.23 in 10.0 mi SW 3.5 mph - N/A   Clear
9:56 PM 51.1 °F 39.0 °F 63% 30.24 in 10.0 mi West 4.6 mph - N/A   Clear
10:56 PM 51.1 °F 37.9 °F 61% 30.25 in 10.0 mi West 4.6 mph - N/A   Clear
11:56 PM 51.1 °F 39.9 °F 66% 30.25 in 10.0 mi Calm Calm - N/A   Clear