Weather History for KSFO - October, 2012

Change the Weather History Date:

Sunday, October 21, 2012

  Actual Average Record
Temperature  
Mean Temperature 58 °F 61 °F  
Max Temperature 62 °F 70 °F 82 °F (1965)
Min Temperature 53 °F 53 °F 39 °F (1949)
Degree Days  
Heating Degree Days 7 4  
Month to date heating degree days 45 69  
Since 1 July heating degree days 351 235  
Cooling Degree Days 0 0  
Month to date cooling degree days 42 20  
Year to date cooling degree days 78 161  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 44 °F    
Average Humidity 60    
Maximum Humidity 72    
Minimum Humidity 48    
Precipitation  
Precipitation T in 0.03 in 0.13 in (1970)
Month to date precipitation 0.03 0.49  
Year to date precipitation 10.49 13.78  
Since 1 July precipitation 0.03 0.70  
Sea Level Pressure  
Sea Level Pressure 29.90 in    
Wind  
Wind Speed 13 mph (WSW)    
Max Wind Speed 25 mph    
Max Gust Speed 30 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily 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

Oct. 21, 2012 Rise Set
Actual Time 7:24 AM PDT 6:23 PM PDT
Civil Twilight 6:57 AM PDT 6:49 PM PDT
Nautical Twilight 6:26 AM PDT 7:20 PM PDT
Astronomical Twilight 5:56 AM PDT 7:50 PM PDT
Moon 1:46 PM PDT (10/21) No Moon Set
Length of Visible Light 11h 52m
Length of Day
10h 59m
Waxing Crescent, 46% of the Moon is Illuminated
Oct 21
Waxing Crescent
Oct 21
First Quarter
Oct 29
Full
Nov 6
Last Quarter
Nov 13
New

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 54.0 °F 45.0 °F 72% 29.87 in 10.0 mi West 12.7 mph - N/A   Clear
1:56 AM 54.0 °F 44.1 °F 69% 29.87 in 10.0 mi WSW 10.4 mph - N/A   Clear
2:56 AM 53.1 °F 44.1 °F 71% 29.87 in 10.0 mi SW 10.4 mph - N/A   Clear
3:56 AM 53.1 °F 43.0 °F 69% 29.87 in 10.0 mi WSW 10.4 mph - N/A   Clear
4:56 AM 53.1 °F 43.0 °F 69% 29.87 in 10.0 mi SW 10.4 mph - N/A   Clear
5:56 AM 54.0 °F 43.0 °F 66% 29.89 in 10.0 mi WSW 8.1 mph - N/A   Clear
6:56 AM 53.1 °F 43.0 °F 69% 29.90 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
7:56 AM 54.0 °F 42.1 °F 64% 29.91 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
8:56 AM 55.4 °F 42.8 °F 63% 29.93 in 10.0 mi WSW 12.7 mph - N/A   Mostly Cloudy
9:56 AM 57.2 °F 42.8 °F 59% 29.95 in 10.0 mi WSW 21.9 mph 28.8 mph N/A   Mostly Cloudy
10:56 AM 59.0 °F 43.0 °F 55% 29.95 in 10.0 mi West 19.6 mph - N/A   Mostly Cloudy
11:56 AM 62.1 °F 42.1 °F 48% 29.95 in 10.0 mi West 20.7 mph - N/A   Mostly Cloudy
12:56 PM 61.0 °F 44.1 °F 54% 29.95 in 10.0 mi West 19.6 mph 27.6 mph N/A   Mostly Cloudy
1:56 PM 60.1 °F 43.0 °F 53% 29.93 in 10.0 mi West 19.6 mph - N/A   Mostly Cloudy
2:56 PM 60.1 °F 43.0 °F 53% 29.91 in 10.0 mi West 18.4 mph 23.0 mph N/A   Mostly Cloudy
3:56 PM 60.1 °F 43.0 °F 53% 29.91 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
4:56 PM 60.1 °F 43.0 °F 53% 29.91 in 10.0 mi West 16.1 mph - N/A   Mostly Cloudy
5:56 PM 57.9 °F 43.0 °F 58% 29.90 in 10.0 mi West 13.8 mph - N/A   Scattered Clouds
6:56 PM 55.9 °F 44.1 °F 64% 29.90 in 10.0 mi SW 5.8 mph - N/A   Scattered Clouds
7:56 PM 57.0 °F 46.0 °F 67% 29.90 in 10.0 mi SSE 5.8 mph - N/A   Scattered Clouds
8:56 PM 55.4 °F 46.4 °F 72% 29.88 in 10.0 mi SSE 9.2 mph - N/A   Scattered Clouds
9:56 PM 57.0 °F 46.0 °F 67% 29.87 in 10.0 mi SW 6.9 mph - N/A   Mostly Cloudy
10:56 PM 57.9 °F 46.9 °F 67% 29.86 in 10.0 mi WSW 11.5 mph - 0.00 in Rain Light Rain
11:56 PM 57.0 °F 48.9 °F 74% 29.85 in 10.0 mi South 10.4 mph - 0.00 in Rain Light Rain