History for San Francisco, CA

Thursday, December 6, 2012 — View Current Conditions
Thursday, December 6, 2012
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Daily Weekly Monthly Custom
  Actual Average Record
Temperature
Mean Temperature 56 °F 52 °F  
Max Temperature 60 °F 58 °F 67 °F (1979)
Min Temperature 51 °F 46 °F 37 °F (1972)
Degree Days
Heating Degree Days 9 13  
Month to date heating degree days 45 78  
Since 1 July heating degree days 640 642  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 86 164  
Growing Degree Days 6 (Base 50)    
Moisture
Dew Point 48 °F    
Average Humidity 78    
Maximum Humidity 93    
Minimum Humidity 62    
Precipitation
Precipitation 0.00 in 0.11 in 1.41 in (1950)
Month to date precipitation 2.24 0.65  
Year to date precipitation 17.46 17.27  
Since 1 July precipitation 7.00 4.19  
Sea Level Pressure
Sea Level Pressure 30.12 in    
Wind
Wind Speed 9 mph (West)    
Max Wind Speed 21 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary
Daily Graph
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Radar Archive
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Local Photos
Fall Palette
It's early December but some of these liquidambar trees don't seem to know it.
Turkey Tail
I don't know if this is a true turkey tail.
Meadowlark
at Quarry Lakes
Mushrooms
Saw these little fungi on a rain-sogged trail at Quarry Lakes today.
Hummingbird
Cap and Tails
Helmet
A stretch but it reminded me of a German helmet.
Wet Grass
I know many of you would have done much better, but I think this is OK.
Pop Top
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Astronomy
May. 23, 2013 Rise Set
Actual Time 7:10 AM PST 4:50 PM PST
Civil Twilight 6:41 AM PST 5:19 PM PST
Nautical Twilight 6:09 AM PST 5:52 PM PST
Astronomical Twilight 5:37 AM PST 6:24 PM PST
Moon No Moon Rise 12:12 PM PST (12/6)
Length Of Visible Light 10h 38m
Length of Day
9h 40m
Waning Gibbous, 48% of the Moon is Illuminated
Dec 6
Waning Gibbous
Dec 13
New
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
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Hourly Observations
Time (PST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:16 AM 57.2 °F 55.4 °F 94% 30.13 in 9.0 mi NNW 3.5 mph - N/A   Overcast
12:41 AM 59.0 °F 55.4 °F 88% 30.13 in 9.0 mi West 8.1 mph - N/A   Overcast
12:56 AM 57.9 °F 55.0 °F 90% 30.13 in 9.0 mi West 8.1 mph - N/A   Overcast
1:56 AM 57.0 °F 54.0 °F 89% 30.13 in 10.0 mi West 11.5 mph - N/A   Overcast
2:56 AM 55.9 °F 52.0 °F 87% 30.13 in 6.0 mi West 12.7 mph - N/A   Overcast
3:41 AM 55.4 °F 51.8 °F 88% 30.12 in 9.0 mi West 16.1 mph - N/A   Overcast
3:56 AM 55.9 °F 50.0 °F 80% 30.12 in 10.0 mi West 13.8 mph - N/A   Overcast
4:56 AM 55.0 °F 48.0 °F 77% 30.12 in 10.0 mi West 18.4 mph - N/A   Overcast
5:11 AM 55.4 °F 48.2 °F 77% 30.11 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
5:27 AM 53.6 °F 46.4 °F 77% 30.11 in 10.0 mi West 16.1 mph - N/A   Scattered Clouds
5:56 AM 54.0 °F 46.9 °F 77% 30.12 in 10.0 mi West 17.3 mph - N/A   Scattered Clouds
6:56 AM 53.1 °F 46.0 °F 77% 30.12 in 10.0 mi West 12.7 mph - N/A   Partly Cloudy
7:56 AM 54.0 °F 46.9 °F 77% 30.13 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy
8:56 AM 55.9 °F 46.9 °F 72% 30.14 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
9:56 AM 57.0 °F 46.0 °F 67% 30.14 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds
10:10 AM 57.2 °F 46.4 °F 67% 30.14 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
10:56 AM 57.0 °F 46.0 °F 67% 30.14 in 10.0 mi WSW 10.4 mph - N/A   Mostly Cloudy
11:56 AM 57.0 °F 45.0 °F 64% 30.12 in 10.0 mi SW 5.8 mph - N/A   Mostly Cloudy
12:56 PM 57.9 °F 46.0 °F 65% 30.10 in 10.0 mi SSW 4.6 mph - N/A   Mostly Cloudy
1:56 PM 57.9 °F 45.0 °F 62% 30.09 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:56 PM 57.9 °F 46.9 °F 67% 30.08 in 10.0 mi NNE 5.8 mph - N/A   Scattered Clouds
3:56 PM 57.9 °F 46.9 °F 67% 30.09 in 10.0 mi NNW 6.9 mph - N/A   Scattered Clouds
4:46 PM 57.2 °F 48.2 °F 72% 30.09 in 10.0 mi WNW 11.5 mph - N/A   Mostly Cloudy
4:56 PM 57.0 °F 46.9 °F 69% 30.09 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy
5:41 PM 55.4 °F 48.2 °F 77% 30.10 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
5:56 PM 55.0 °F 48.0 °F 77% 30.10 in 10.0 mi West 11.5 mph - N/A   Scattered Clouds
6:25 PM 55.4 °F 48.2 °F 77% 30.10 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
6:56 PM 55.0 °F 48.0 °F 77% 30.11 in 10.0 mi West 10.4 mph - N/A   Overcast
7:29 PM 53.6 °F 46.4 °F 77% 30.12 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
7:56 PM 54.0 °F 46.9 °F 77% 30.12 in 10.0 mi WNW 4.6 mph - N/A   Partly Cloudy
8:56 PM 53.1 °F 46.0 °F 77% 30.12 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
9:56 PM 53.1 °F 46.0 °F 77% 30.13 in 10.0 mi WNW 4.6 mph - N/A   Clear
10:56 PM 53.1 °F 46.0 °F 77% 30.13 in 10.0 mi WNW 3.5 mph - N/A   Clear
11:56 PM 55.0 °F 46.0 °F 72% 30.13 in 10.0 mi North 3.5 mph - N/A   Clear
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