San Francisco, CA

12:00 PM PDT on April 29, 2017 (GMT -0700)
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Weather History for KSFO - May, 2012

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Tuesday, May 15, 2012

  Actual Average Record
Temperature  
Mean Temperature 56 °F 60 °F  
Max Temperature 61 °F 68 °F 96 °F (2008)
Min Temperature 51 °F 52 °F 43 °F (1955)
Degree Days  
Heating Degree Days 9 6  
Month to date heating degree days 88 96  
Since 1 July heating degree days 2595 2464  
Cooling Degree Days 0 0  
Month to date cooling degree days 2 0  
Year to date cooling degree days 7 6  
Growing Degree Days 6 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 73    
Maximum Humidity 83    
Minimum Humidity 62    
Precipitation  
Precipitation 0.00 in 0.01 in 1.03 in (1996)
Month to date precipitation T 0.28  
Year to date precipitation 10.37 12.78  
Since 1 July precipitation 13.24  
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 15 mph (West)    
Max Wind Speed 28 mph    
Max Gust Speed 32 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

May. 15, 2012 Rise Set
Actual Time 5:59 AM PDT 8:12 PM PDT
Civil Twilight 5:30 AM PDT 8:42 PM PDT
Nautical Twilight 4:54 AM PDT 9:18 PM PDT
Astronomical Twilight 4:14 AM PDT 9:57 PM PDT
Moon 2:58 AM PDT (5/15) 3:41 PM PDT (5/15)
Length of Visible Light 15h 11m
Length of Day
14h 13m
Waning Crescent, 23% of the Moon is Illuminated
May 15
Waning Crescent
May 20
New
May 28
First Quarter
Jun 4
Full
Jun 11
Last 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 53.1 °F 48.0 °F 83% 30.07 in 10.0 mi West 13.8 mph - N/A   Mostly Cloudy
1:56 AM 53.1 °F 46.9 °F 80% 30.04 in 10.0 mi WSW 11.5 mph - N/A   Partly Cloudy
2:56 AM 52.0 °F 46.9 °F 83% 30.05 in 10.0 mi WSW 10.4 mph - N/A   Mostly Cloudy
3:56 AM 51.1 °F 46.9 °F 86% 30.05 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
4:04 AM 51.8 °F 46.4 °F 82% 30.05 in 10.0 mi WNW 3.5 mph - N/A   Partly Cloudy
4:56 AM 51.1 °F 46.0 °F 83% 30.05 in 10.0 mi WNW 6.9 mph - N/A   Partly Cloudy
5:56 AM 51.1 °F 46.0 °F 83% 30.05 in 10.0 mi West 8.1 mph - N/A   Scattered Clouds
6:56 AM 52.0 °F 46.9 °F 83% 30.07 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
7:56 AM 51.1 °F 46.0 °F 83% 30.08 in 10.0 mi West 12.7 mph - N/A   Mostly Cloudy
8:56 AM 52.0 °F 46.9 °F 83% 30.08 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
9:56 AM 55.0 °F 46.9 °F 74% 30.08 in 10.0 mi WSW 17.3 mph - N/A   Mostly Cloudy
10:56 AM 57.0 °F 46.9 °F 69% 30.08 in 10.0 mi West 16.1 mph - N/A   Mostly Cloudy
11:56 AM 57.9 °F 46.9 °F 67% 30.07 in 10.0 mi WNW 15.0 mph - N/A   Partly Cloudy
12:56 PM 59.0 °F 48.0 °F 67% 30.05 in 10.0 mi WNW 16.1 mph 23.0 mph N/A   Partly Cloudy
1:56 PM 59.0 °F 46.9 °F 64% 30.05 in 10.0 mi WNW 21.9 mph 29.9 mph N/A   Partly Cloudy
2:56 PM 59.0 °F 46.9 °F 64% 30.06 in 10.0 mi West 23.0 mph - N/A   Scattered Clouds
3:56 PM 59.0 °F 46.0 °F 62% 30.04 in 10.0 mi West 19.6 mph 31.1 mph N/A   Partly Cloudy
4:56 PM 57.9 °F 46.9 °F 67% 30.03 in 10.0 mi West 23.0 mph - N/A   Partly Cloudy
5:56 PM 57.0 °F 46.0 °F 67% 30.02 in 10.0 mi West 21.9 mph 31.1 mph N/A   Partly Cloudy
6:56 PM 53.6 °F 46.4 °F 77% 30.02 in 10.0 mi West 21.9 mph 31.1 mph N/A   Scattered Clouds
7:11 PM 53.6 °F 46.4 °F 77% 30.02 in 10.0 mi West 25.3 mph 31.1 mph N/A   Mostly Cloudy
7:56 PM 53.1 °F 46.0 °F 77% 30.03 in 10.0 mi West 23.0 mph 28.8 mph N/A   Mostly Cloudy
8:56 PM 53.1 °F 46.0 °F 77% 30.04 in 10.0 mi West 20.7 mph 26.5 mph N/A   Mostly Cloudy
9:56 PM 53.1 °F 46.9 °F 80% 30.06 in 10.0 mi West 16.1 mph - N/A   Overcast
10:56 PM 53.1 °F 46.9 °F 80% 30.06 in 10.0 mi West 12.7 mph - N/A   Overcast
11:56 PM 53.1 °F 46.9 °F 80% 30.06 in 10.0 mi West 11.5 mph - N/A   Overcast