San Francisco, CA

10:01 AM PDT on June 23, 2017 (GMT -0700)
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Weather History for KSFO - December, 2011

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Week of December 18, 2011 through December 24, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 60 °F 57 °F 52 °F
Mean Temperature 52 °F 48 °F 44 °F
Min Temperature 45 °F 39 °F 36 °F
Degree Days  
Heating Degree Days (base 65) 21 17 13 117
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 2 0 0 2
Dew Point  
Dew Point 45 °F 34 °F 13 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 23 mph 4 mph 0 mph
Gust Wind 28 mph 21 mph 18 mph
Sea Level Pressure  
Sea Level Pressure 30.58 in 30.24 in 30.03 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Dec. 18, 2011 Rise Set
Actual Time 7:19 AM PST 4:53 PM PST
Civil Twilight 6:49 AM PST 5:22 PM PST
Nautical Twilight 6:16 AM PST 5:55 PM PST
Astronomical Twilight 5:44 AM PST 6:27 PM PST
Moon 12:31 AM PST (12/18) 12:16 PM PST (12/18)
Length of Visible Light 10h 32m
Length of Day
9h 34m
Last Quarter, 41% of the Moon is Illuminated
Dec 18
Last Quarter
Dec 24
New
Dec 31
First Quarter
Jan 8
Full
Jan 16
Last Quarter

Daily Weather History & Observations

2011 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  
18 53 47 40 45 41 33 89 80 70 30.22 30.16 30.12 10 10 9 15 5 17 0.00 Fog
19 59 52 45 45 42 38 86 67 47 30.12 30.08 30.03 10 10 8 15 4 17 T Rain
20 60 50 40 42 34 28 83 56 29 30.12 30.07 30.04 10 10 10 9 3 12 0.00  
21 60 50 39 41 35 32 82 59 36 30.17 30.10 30.06 10 10 9 9 2 10 0.00  
22 57 48 39 36 24 13 65 41 17 30.49 30.33 30.18 10 10 10 23 8 28 0.00  
23 52 44 36 40 31 25 82 64 46 30.58 30.52 30.48 10 10 10 12 2 13 0.00  
24 57 47 36 41 32 27 85 62 38 30.50 30.44 30.38 10 10 7 10 2 12 0.00