Weather History for San Francisco, CA

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Week of December 28, 2003 through January 3, 2004

  Max Avg Min Sum
Temperature  
Max Temperature 57 °F 53 °F 50 °F
Mean Temperature 52 °F 48 °F 44 °F
Min Temperature 48 °F 43 °F 37 °F
Degree Days  
Heating Degree Days (base 65) 22 17 12 119
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 2 0 0 2
Dew Point  
Dew Point 52 °F 43 °F 32 °F
Precipitation  
Precipitation 2.60 in 0.72 in 0.00 in 5.04 in
Snowdepth - - - -
Wind  
Wind 44 mph 8 mph 0 mph
Gust Wind 54 mph 38 mph 21 mph
Sea Level Pressure  
Sea Level Pressure 30.50 in 30.04 in 29.61 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Jan. 01, 2004 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 1:08 PM PST (1/1) 2:05 AM PST (1/1)
Length of Visible Light 10h 35m
Length of Day
9h 37m
Waxing Gibbous, 72% of the Moon is Illuminated
Jan 1
Waxing Gibbous
Jan 7
Full
Jan 14
Last Quarter
Jan 21
New
Jan 28
First Quarter

Daily Weather History & Observations

2003 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  
28 50 44 37 45 39 35 97 80 57 30.50 30.37 30.14 10 10 9 10 3 - 0.00 Rain
29 57 52 48 52 50 46 96 91 82 30.11 29.76 29.61 10 5 1 36 18 48 2.60 Rain
30 52 49 46 48 46 45 100 89 80 30.01 29.90 29.77 10 9 5 12 2 - 0.02 Rain
31 54 50 46 49 46 45 97 89 74 30.02 29.98 29.95 10 8 4 14 3 - 0.00 Rain
2004 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 55 50 45 52 47 42 90 84 71 30.10 29.95 29.83 10 6 1 44 17 54 2.16 Rain
2 51 45 39 45 41 36 97 83 68 30.13 30.07 30.02 10 10 5 15 5 - 0.26 Rain
3 50 46 39 38 35 32 89 70 50 30.34 30.26 30.13 10 10 10 9 5 - 0.00