Weather History for San Francisco, CA

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Week of December 30, 2012 through January 5, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 55 °F 54 °F 53 °F
Mean Temperature 48 °F 47 °F 45 °F
Min Temperature 42 °F 39 °F 37 °F
Degree Days  
Heating Degree Days (base 65) 20 18 17 128
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 48 °F 38 °F 25 °F
Precipitation  
Precipitation 0.06 in 0.01 in 0.00 in 0.06 in
Snowdepth - - - -
Wind  
Wind 22 mph 4 mph 0 mph
Gust Wind 24 mph - -
Sea Level Pressure  
Sea Level Pressure 30.30 in 30.20 in 30.06 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Dec. 31, 2012 Rise Set
Actual Time 7:24 AM PST 5:01 PM PST
Civil Twilight 6:55 AM PST 5:30 PM PST
Nautical Twilight 6:22 AM PST 6:03 PM PST
Astronomical Twilight 5:50 AM PST 6:35 PM PST
Moon 8:33 PM PST (12/31) 9:12 AM PST (12/31)
Length of Visible Light 10h 35m
Length of Day
9h 36m
Waning Gibbous, 89% of the Moon is Illuminated
Dec 31
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
30 55 48 40 42 38 32 89 70 50 30.18 30.10 30.06 10 10 10 15 4 17 0.00  
31 53 45 37 39 33 25 76 56 35 30.30 30.26 30.20 10 10 10 9 3 21 0.00  
2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 53 48 42 40 37 34 83 69 54 30.29 30.25 30.22 10 10 9 20 8 22 T  
2 55 46 37 44 36 31 85 68 50 30.25 30.20 30.15 10 10 10 8 3 22 0.00  
3 53 45 37 42 37 33 85 73 61 30.27 30.22 30.18 10 10 9 8 1 9 0.00  
4 55 48 40 42 38 35 82 68 54 30.30 30.24 30.19 10 10 8 8 3 9 0.00  
5 53 47 41 48 44 36 93 85 76 30.27 30.16 30.07 10 8 3 22 3 24 0.06 Rain