Weather History for San Francisco, CA

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Monday, July 30, 2012

  Actual Average Record
Temperature  
Mean Temperature 65 °F 64 °F  
Max Temperature 76 °F 72 °F 97 °F (1977)
Min Temperature 54 °F 56 °F 45 °F (1954)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 75 60  
Since 1 June heating degree days 190 165  
Since 1 July heating degree days 75 60  
Cooling Degree Days 0 1  
Month to date cooling degree days 5 30  
Year to date cooling degree days 28 70  
Since 1 June cooling degree days 21 51  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 66    
Maximum Humidity 89    
Minimum Humidity 43    
Precipitation  
Precipitation 0.00 in 0.00 in 0.03 in (1966)
Month to date precipitation T 0.00  
Year to date precipitation 10.46 13.08  
Since 1 July precipitation T 0.00  
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 12 mph (WNW)    
Max Wind Speed 26 mph    
Max Gust Speed 31 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jul. 30, 2012 Rise Set
Actual Time 6:12 AM PDT 8:19 PM PDT
Civil Twilight 5:42 AM PDT 8:48 PM PDT
Nautical Twilight 5:07 AM PDT 9:23 PM PDT
Astronomical Twilight 4:28 AM PDT 10:02 PM PDT
Moon 6:24 PM PDT (7/30) 3:34 AM PDT (7/30)
Length of Visible Light 15h 05m
Length of Day
14h 06m
Waxing Gibbous, 93% of the Moon is Illuminated
Jul 30
Waxing Gibbous
Aug 1
Full
Aug 9
Last Quarter
Aug 17
New
Aug 24
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 55.0 °F 51.1 °F 86% 30.00 in 10.0 mi WNW 4.6 mph - N/A   Scattered Clouds
1:56 AM 55.0 °F 51.1 °F 86% 29.99 in 10.0 mi WNW 6.9 mph - N/A   Scattered Clouds
2:56 AM 55.0 °F 51.1 °F 86% 29.99 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
3:56 AM 55.0 °F 51.1 °F 86% 29.98 in 10.0 mi WNW 4.6 mph - N/A   Scattered Clouds
4:56 AM 54.0 °F 50.0 °F 86% 29.98 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
5:44 AM 55.4 °F 51.8 °F 88% 29.98 in 10.0 mi WNW 3.5 mph - N/A   Mostly Cloudy
5:56 AM 55.0 °F 50.0 °F 83% 29.99 in 10.0 mi West 3.5 mph - N/A   Mostly Cloudy
6:56 AM 55.4 °F 50.0 °F 82% 29.98 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:56 AM 57.0 °F 52.0 °F 83% 29.99 in 8.0 mi SSW 3.5 mph - N/A   Overcast
8:56 AM 60.1 °F 54.0 °F 80% 30.00 in 9.0 mi Variable 3.5 mph - N/A   Overcast
9:17 AM 60.8 °F 53.6 °F 77% 29.99 in 9.0 mi SSE 3.5 mph - N/A   Mostly Cloudy
9:49 AM 62.6 °F 55.4 °F 77% 29.99 in 9.0 mi ENE 3.5 mph - N/A   Partly Cloudy
9:56 AM 63.0 °F 55.0 °F 75% 29.99 in 9.0 mi ENE 4.6 mph - N/A   Partly Cloudy
10:56 AM 64.9 °F 55.9 °F 73% 29.99 in 9.0 mi NE 4.6 mph - N/A   Partly Cloudy
11:56 AM 66.9 °F 57.0 °F 70% 29.98 in 10.0 mi NE 4.6 mph - N/A   Partly Cloudy
12:56 PM 73.0 °F 54.0 °F 51% 29.96 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
1:56 PM 72.0 °F 53.1 °F 51% 29.95 in 10.0 mi WNW 15.0 mph - N/A   Partly Cloudy
2:56 PM 73.0 °F 53.1 °F 49% 29.93 in 10.0 mi WNW 18.4 mph - N/A   Partly Cloudy
3:56 PM 75.9 °F 52.0 °F 43% 29.91 in 10.0 mi WNW 21.9 mph - N/A   Partly Cloudy
4:56 PM 73.0 °F 51.1 °F 46% 29.90 in 10.0 mi WNW 23.0 mph - N/A   Partly Cloudy
5:56 PM 68.0 °F 51.1 °F 55% 29.88 in 10.0 mi WNW 20.7 mph - N/A   Partly Cloudy
6:56 PM 64.0 °F 51.1 °F 63% 29.88 in 10.0 mi WNW 24.2 mph 31.1 mph N/A   Partly Cloudy
7:56 PM 61.0 °F 51.1 °F 70% 29.90 in 10.0 mi WNW 15.0 mph - N/A   Clear
8:56 PM 59.0 °F 50.0 °F 72% 29.90 in 10.0 mi WNW 17.3 mph - N/A   Partly Cloudy
9:56 PM 59.0 °F 50.0 °F 72% 29.93 in 10.0 mi WNW 18.4 mph - N/A   Clear
10:56 PM 59.0 °F 50.0 °F 72% 29.94 in 10.0 mi WNW 18.4 mph - N/A   Clear
11:56 PM 57.9 °F 50.0 °F 75% 29.94 in 10.0 mi WNW 16.1 mph - N/A   Clear