Weather History for San Francisco, CA

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Saturday, September 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 63 °F 65 °F  
Max Temperature 68 °F 74 °F 95 °F (2003)
Min Temperature 58 °F 56 °F 45 °F (1955)
Degree Days  
Heating Degree Days 2 2  
Month to date heating degree days 10 42  
Since 1 July heating degree days 125 155  
Cooling Degree Days 0 1  
Month to date cooling degree days 34 36  
Year to date cooling degree days 134 133  
Growing Degree Days 14 (Base 50)    
Moisture  
Dew Point 56 °F    
Average Humidity 75    
Maximum Humidity 90    
Minimum Humidity 59    
Precipitation  
Precipitation 0.23 in 0.01 in 0.23 in (2013)
Month to date precipitation 0.23 0.09  
Year to date precipitation 2.12 13.21  
Since 1 July precipitation 0.23 0.13  
Sea Level Pressure  
Sea Level Pressure 29.85 in    
Wind  
Wind Speed 12 mph (SW)    
Max Wind Speed 24 mph    
Max Gust Speed 28 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 21, 2013 Rise Set
Actual Time 6:56 AM PDT 7:07 PM PDT
Civil Twilight 6:30 AM PDT 7:33 PM PDT
Nautical Twilight 5:59 AM PDT 8:04 PM PDT
Astronomical Twilight 5:28 AM PDT 8:35 PM PDT
Moon 8:25 PM PDT (9/21) 9:17 AM PDT (9/21)
Length of Visible Light 13h 02m
Length of Day
12h 10m
Waning Gibbous, 94% of the Moon is Illuminated
Sep 21
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 64.4 °F 57.2 °F 77% 29.83 in 10.0 mi South 9.2 mph 19.6 mph N/A   Mostly Cloudy
12:56 AM 64.9 °F 57.0 °F 75% 29.83 in 10.0 mi South 10.4 mph 19.6 mph N/A   Mostly Cloudy
1:56 AM 64.9 °F 57.0 °F 75% 29.82 in 10.0 mi SSW 21.9 mph - N/A   Mostly Cloudy
2:48 AM 62.6 °F 59.0 °F 88% 29.83 in 9.0 mi South 16.1 mph - 0.00 in Rain Light Rain
2:56 AM 63.0 °F 59.0 °F 87% 29.83 in 10.0 mi South 15.0 mph - 0.00 in   Overcast
3:24 AM 64.4 °F 59.0 °F 83% 29.82 in 10.0 mi South 16.1 mph - N/A   Overcast
3:39 AM 62.6 °F 57.2 °F 82% 29.82 in 10.0 mi South 15.0 mph - N/A   Overcast
3:56 AM 63.0 °F 57.9 °F 84% 29.82 in 10.0 mi SSW 12.7 mph - N/A   Overcast
4:56 AM 62.1 °F 57.0 °F 84% 29.82 in 10.0 mi SW 10.4 mph - N/A   Partly Cloudy
5:56 AM 62.1 °F 55.9 °F 80% 29.82 in 10.0 mi SSW 12.7 mph - N/A   Partly Cloudy
6:56 AM 62.1 °F 55.0 °F 78% 29.82 in 10.0 mi SSW 4.6 mph - N/A   Scattered Clouds
7:56 AM 62.1 °F 55.9 °F 80% 29.83 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
8:56 AM 64.9 °F 55.9 °F 73% 29.83 in 10.0 mi South 11.5 mph - N/A   Overcast
9:56 AM 66.0 °F 55.9 °F 70% 29.83 in 10.0 mi South 12.7 mph - N/A   Overcast
10:25 AM 62.6 °F 57.2 °F 82% 29.84 in 1.8 mi SSW 3.5 mph - 0.05 in Rain Heavy Rain
10:33 AM 62.6 °F 57.2 °F 82% 29.84 in 3.0 mi SSW 3.5 mph - 0.07 in Rain Light Rain
10:56 AM 63.0 °F 57.9 °F 84% 29.85 in 4.0 mi SW 10.4 mph - 0.13 in Rain Heavy Rain
11:19 AM 62.6 °F 57.2 °F 82% 29.85 in 5.0 mi South 9.2 mph - 0.06 in Rain Rain
11:46 AM 62.6 °F 57.2 °F 82% 29.85 in 10.0 mi South 11.5 mph - 0.09 in Rain Light Rain
11:56 AM 63.0 °F 57.9 °F 84% 29.86 in 10.0 mi SSW 11.5 mph - 0.09 in Rain Light Rain
12:56 PM 63.0 °F 57.0 °F 81% 29.85 in 10.0 mi SW 12.7 mph - 0.01 in   Overcast
1:56 PM 64.0 °F 57.0 °F 78% 29.85 in 10.0 mi SSW 10.4 mph - 0.00 in   Overcast
2:56 PM 66.0 °F 55.9 °F 70% 29.84 in 10.0 mi WSW 11.5 mph - 0.00 in   Overcast
3:56 PM 68.0 °F 54.0 °F 61% 29.84 in 10.0 mi West 17.3 mph - N/A   Mostly Cloudy
4:56 PM 66.0 °F 54.0 °F 65% 29.85 in 10.0 mi West 18.4 mph - N/A   Mostly Cloudy
5:56 PM 64.9 °F 54.0 °F 68% 29.85 in 10.0 mi West 13.8 mph - N/A   Scattered Clouds
6:56 PM 62.1 °F 54.0 °F 75% 29.86 in 10.0 mi West 11.5 mph - N/A   Scattered Clouds
7:56 PM 61.0 °F 53.1 °F 75% 29.87 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
8:56 PM 61.0 °F 53.1 °F 75% 29.89 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
9:56 PM 60.1 °F 54.0 °F 80% 29.89 in 10.0 mi West 10.4 mph - N/A   Partly Cloudy
10:56 PM 60.1 °F 54.0 °F 80% 29.90 in 10.0 mi West 11.5 mph - N/A   Clear
11:56 PM 59.0 °F 54.0 °F 83% 29.91 in 10.0 mi West 9.2 mph - N/A   Clear