Weather History for KSFO - January, 2000

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Week of December 26, 1999

  Max Avg Min Sum
Temperature  
Max Temperature 60 °F 57 °F 52 °F
Mean Temperature 50 °F 48 °F 46 °F
Min Temperature 42 °F 40 °F 39 °F
Degree Days  
Heating Degree Days (base 65) 20 17 14 100
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 52 °F 44 °F 37 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 15 mph 3 mph 0 mph
Gust Wind 17 mph 17 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.40 in 30.21 in 30.03 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Jan. 01, 2000 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 2:49 AM PST (1/1) 1:55 PM PST (1/1)
Length of Visible Light 10h 35m
Length of Day
9h 37m
Waning Crescent, 20% of the Moon is Illuminated
Jan 1
Waning Crescent
Jan 6
New
Jan 14
First Quarter
Jan 20
Full
Jan 27
Last Quarter

Daily Weather History & Observations

1999 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  
26 60 50 41 49 42 39 93 77 49 30.34 30.30 30.27 9 7 5 7 3 - 0.00  
27 59 49 39 49 43 38 96 79 59 30.40 30.35 30.31 10 6 4 6 2 - 0.00  
28 57 50 42 52 43 38 92 79 62 30.40 30.31 30.21 10 8 5 6 1 - 0.00  
29 55 48 41 50 44 37 96 82 67 30.20 30.14 30.09 10 9 6 7 2 - 0.00  
30 57 48 39 49 45 40 100 88 53 30.13 30.08 30.03 10 6 3 13 3 - 0.00  
31 52 46 39 47 44 40 100 91 74 30.11 30.07 30.03 10 6 0 15 6 17 0.00 Fog