Weather History for KSFO - December, 2012

Change the Weather History Date:

Week of December 23, 2012 through December 29, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 61 °F 55 °F 50 °F
Mean Temperature 56 °F 50 °F 46 °F
Min Temperature 51 °F 46 °F 41 °F
Degree Days  
Heating Degree Days (base 65) 19 15 9 102
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 5 1 0 5
Dew Point  
Dew Point 57 °F 42 °F 36 °F
Precipitation  
Precipitation 1.35 in 0.46 in 0.00 in 2.73 in
Snowdepth - - - -
Wind  
Wind 38 mph 9 mph 0 mph
Gust Wind 47 mph 31 mph 20 mph
Sea Level Pressure  
Sea Level Pressure 30.22 in 30.05 in 29.79 in

Weekly Weather History Graph

Weekly Weather History Graph

Search for Another Location

Airport or City:

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. 28, 2012 Rise Set
Actual Time 7:23 AM PST 4:59 PM PST
Civil Twilight 6:54 AM PST 5:28 PM PST
Nautical Twilight 6:21 AM PST 6:01 PM PST
Astronomical Twilight 5:49 AM PST 6:33 PM PST
Moon 5:39 PM PST (12/28) 7:22 AM PST (12/28)
Length of Visible Light 10h 33m
Length of Day
9h 35m
Full, 100% of the Moon is Illuminated
Dec 28
Full
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  
23 61 56 51 57 51 45 93 83 72 30.07 29.95 29.86 10 7 2 38 16 47 1.35 Rain
24 56 51 46 45 42 37 93 74 54 30.22 30.16 30.05 10 10 10 13 5 15 T  
25 54 49 44 48 42 38 86 79 71 30.15 29.96 29.79 10 10 5 26 7 36 0.90 Rain
26 55 52 48 49 43 40 80 73 66 30.12 30.00 29.89 10 9 3 26 14 33 0.20 Rain
27 54 50 46 44 40 36 82 68 54 30.18 30.14 30.10 10 10 10 15 6 20 0.00  
28 50 46 41 41 39 37 89 75 61 30.19 30.12 30.04 10 10 6 13 5 14 0.17 Rain
29 54 49 44 43 40 37 82 71 59 30.09 30.05 30.01 10 9 5 20 8 22 0.11 Rain