Weather History for KSFO - September, 2012

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Week of September 16, 2012 through September 22, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 73 °F 67 °F 64 °F
Mean Temperature 62 °F 60 °F 59 °F
Min Temperature 55 °F 53 °F 51 °F
Degree Days  
Heating Degree Days (base 65) 6 5 3 34
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 12 10 8 68
Dew Point  
Dew Point 54 °F 48 °F 46 °F
Precipitation  
Precipitation 0.00 in 0.00 in 0.00 in 0.00 in
Snowdepth - - - -
Wind  
Wind 28 mph 13 mph 0 mph
Gust Wind 33 mph 24 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.14 in 30.02 in 29.86 in

Weekly Weather History Graph

Weekly Weather History Graph

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Astronomy

Sep. 22, 2012 Rise Set
Actual Time 6:57 AM PDT 7:05 PM PDT
Civil Twilight 6:31 AM PDT 7:31 PM PDT
Nautical Twilight 6:01 AM PDT 8:02 PM PDT
Astronomical Twilight 5:30 AM PDT 8:32 PM PDT
Moon 2:13 PM PDT (9/22) No Moon Set
Length of Visible Light 12h 59m
Length of Day
12h 07m
Waxing Crescent, 50% of the Moon is Illuminated
Sep 22
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
16 66 59 51 51 49 48 89 75 60 30.06 30.02 29.98 10 10 10 25 12 29 0.00  
17 66 60 54 50 48 48 83 70 56 30.07 30.04 30.00 10 10 10 24 10 26 0.00  
18 65 59 53 52 48 46 80 68 56 30.13 30.09 30.05 10 10 10 24 15 30 0.00  
19 64 60 55 50 49 48 77 67 56 30.14 30.10 30.06 10 10 10 25 16 31 0.00  
20 64 59 54 49 48 47 83 70 56 30.09 30.05 30.00 10 10 10 28 17 33 0.00  
21 70 62 54 50 48 47 83 64 44 30.01 29.96 29.91 10 10 10 25 14 30 0.00  
22 73 62 51 54 49 46 83 64 44 29.94 29.91 29.86 10 10 9 25 9 30 0.00