Weather History for San Francisco, CA

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Friday, August 3, 2012

  Actual Average Record
Temperature  
Mean Temperature 62 °F 64 °F  
Max Temperature 71 °F 72 °F 91 °F (1998)
Min Temperature 53 °F 56 °F 45 °F (1954)
Degree Days  
Heating Degree Days 3 2  
Month to date heating degree days 9 6  
Since 1 June heating degree days 202 176  
Since 1 July heating degree days 87 71  
Cooling Degree Days 0 1  
Month to date cooling degree days 0 3  
Year to date cooling degree days 28 67  
Since 1 June cooling degree days 21 48  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 70    
Maximum Humidity 89    
Minimum Humidity 51    
Precipitation  
Precipitation 0.00 in 0.00 in 0.01 in (1953)
Month to date precipitation 0.00 0.00  
Year to date precipitation 10.46 13.08  
Since 1 July precipitation T T  
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 9 mph (NW)    
Max Wind Speed 18 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 03, 2012 Rise Set
Actual Time 6:15 AM PDT 8:15 PM PDT
Civil Twilight 5:46 AM PDT 8:43 PM PDT
Nautical Twilight 5:11 AM PDT 9:18 PM PDT
Astronomical Twilight 4:33 AM PDT 9:56 PM PDT
Moon 9:00 PM PDT (8/3) 8:01 AM PDT (8/3)
Length of Visible Light 14h 57m
Length of Day
13h 59m
Full, 97% of the Moon is Illuminated
Aug 3
Full
Aug 9
Last Quarter
Aug 17
New
Aug 24
First Quarter
Aug 31
Full

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 50.0 °F 86% 29.92 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
1:56 AM 54.0 °F 50.0 °F 86% 29.92 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
2:03 AM 53.6 °F 50.0 °F 88% 29.91 in 10.0 mi West 5.8 mph - N/A   Overcast
2:24 AM 53.6 °F 50.0 °F 88% 29.92 in 10.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
2:56 AM 55.0 °F 50.0 °F 83% 29.91 in 10.0 mi WNW 4.6 mph - N/A   Mostly Cloudy
3:56 AM 54.0 °F 48.9 °F 83% 29.91 in 10.0 mi WNW 4.6 mph - N/A   Overcast
4:56 AM 54.0 °F 48.9 °F 83% 29.89 in 10.0 mi West 5.8 mph - N/A   Overcast
5:56 AM 53.1 °F 48.9 °F 86% 29.90 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
6:56 AM 54.0 °F 48.9 °F 83% 29.90 in 10.0 mi West 5.8 mph - N/A   Overcast
7:56 AM 55.9 °F 50.0 °F 80% 29.91 in 10.0 mi WNW 3.5 mph - N/A   Overcast
8:56 AM 57.9 °F 50.0 °F 75% 29.91 in 10.0 mi NNW 5.8 mph - N/A   Scattered Clouds
9:56 AM 61.0 °F 51.1 °F 70% 29.92 in 10.0 mi NNE 4.6 mph - N/A   Partly Cloudy
10:56 AM 62.6 °F 51.8 °F 68% 29.91 in 10.0 mi North 5.8 mph - N/A   Partly Cloudy
11:56 AM 64.0 °F 53.1 °F 67% 29.90 in 10.0 mi NE 6.9 mph - N/A   Partly Cloudy
12:56 PM 66.9 °F 52.0 °F 59% 29.89 in 10.0 mi NNW 9.2 mph - N/A   Mostly Cloudy
1:56 PM 68.0 °F 52.0 °F 56% 29.87 in 10.0 mi NNW 12.7 mph - N/A   Mostly Cloudy
2:56 PM 69.8 °F 51.8 °F 53% 29.86 in 10.0 mi NW 16.1 mph - N/A   Mostly Cloudy
3:56 PM 68.0 °F 51.1 °F 55% 29.85 in 10.0 mi WNW 16.1 mph - N/A   Scattered Clouds
4:56 PM 68.0 °F 52.0 °F 56% 29.83 in 10.0 mi WNW 13.8 mph - N/A   Mostly Cloudy
5:41 PM 69.8 °F 51.8 °F 53% 29.83 in 10.0 mi WNW 13.8 mph - N/A   Mostly Cloudy
5:56 PM 70.0 °F 50.0 °F 49% 29.83 in 10.0 mi West 10.4 mph 16.1 mph N/A   Mostly Cloudy
6:56 PM 62.1 °F 51.1 °F 67% 29.83 in 10.0 mi WNW 15.0 mph - N/A   Scattered Clouds
7:56 PM 57.0 °F 50.0 °F 77% 29.84 in 10.0 mi WNW 13.8 mph - N/A   Scattered Clouds
8:56 PM 57.0 °F 50.0 °F 77% 29.86 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
9:56 PM 55.9 °F 50.0 °F 80% 29.86 in 10.0 mi WNW 9.2 mph - N/A   Partly Cloudy
10:56 PM 55.0 °F 50.0 °F 83% 29.86 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
11:56 PM 55.9 °F 50.0 °F 80% 29.87 in 10.0 mi WNW 6.9 mph - N/A   Scattered Clouds