San Francisco, CA

1:54 AM PST on December 14, 2019 (GMT -0800)
San Francisco International

Weather History for KSFO - May, 2019

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Friday, May 17, 2019

  Actual Average Record
Temperature  
Mean Temperature 58 °F 60 °F  
Max Temperature 63 °F 68 °F 93 °F (1997)
Min Temperature 52 °F 52 °F 45 °F (1996)
Degree Days  
Heating Degree Days 7 6  
Month to date heating degree days 100 108  
Since 1 July heating degree days 2219 2476  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 9 6  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 45 °F    
Average Humidity 63    
Maximum Humidity 77    
Minimum Humidity 48    
Precipitation  
Precipitation 0.00 in 0.01 in 0.24 in (1994)
Month to date precipitation 0.76 0.31  
Year to date precipitation 17.19 12.81  
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 14 mph (West)    
Max Wind Speed 23 mph    
Max Gust Speed 28 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

May. 17, 2019 Rise Set
Actual Time 5:58 AM PDT 8:13 PM PDT
Civil Twilight 5:29 AM PDT 8:43 PM PDT
Nautical Twilight 4:52 AM PDT 9:19 PM PDT
Astronomical Twilight 4:13 AM PDT 9:59 PM PDT
Moon 7:10 PM PDT (5/17) 5:29 AM PDT (5/17)
Length of Visible Light 15h 14m
Length of Day
14h 15m
Waxing Gibbous, 99% of the Moon is Illuminated
May 17
Waxing Gibbous
May 18
Full
May 26
Last Quarter
Jun 3
New
Jun 9
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 44.1 °F 67% 30.08 in 10.0 mi West 15.0 mph - N/A   Mostly Cloudy
1:56 AM 54.0 °F 44.1 °F 69% 30.07 in 10.0 mi West 13.8 mph - N/A   Mostly Cloudy
2:56 AM 52.0 °F 44.1 °F 74% 30.06 in 10.0 mi West 13.8 mph - N/A   Mostly Cloudy
3:56 AM 54.0 °F 43.0 °F 66% 30.07 in 10.0 mi West 11.5 mph - N/A   Partly Cloudy
4:56 AM 54.0 °F 44.1 °F 69% 30.08 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds
5:56 AM 53.1 °F 46.0 °F 77% 30.09 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
6:56 AM 55.0 °F 45.0 °F 69% 30.10 in 10.0 mi West 17.3 mph - N/A   Mostly Cloudy
7:56 AM 55.9 °F 46.0 °F 69% 30.12 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
8:56 AM 57.0 °F 45.0 °F 64% 30.13 in 10.0 mi West 16.1 mph - N/A   Mostly Cloudy
9:56 AM 59.0 °F 44.1 °F 58% 30.14 in 10.0 mi West 16.1 mph - N/A   Mostly Cloudy
10:56 AM 60.1 °F 45.0 °F 57% 30.14 in 10.0 mi West 12.7 mph 19.6 mph N/A   Scattered Clouds
11:56 AM 60.1 °F 44.1 °F 55% 30.16 in 10.0 mi WNW 15.0 mph 20.7 mph N/A   Scattered Clouds
12:56 PM 61.0 °F 43.0 °F 52% 30.15 in 10.0 mi West 17.3 mph - N/A   Scattered Clouds
1:56 PM 62.1 °F 43.0 °F 50% 30.14 in 10.0 mi West 15.0 mph 24.2 mph N/A   Partly Cloudy
2:56 PM 62.1 °F 45.0 °F 53% 30.14 in 10.0 mi West 18.4 mph 24.2 mph N/A   Scattered Clouds
3:56 PM 63.0 °F 44.1 °F 50% 30.14 in 10.0 mi West 21.9 mph - N/A   Scattered Clouds
4:56 PM 61.0 °F 44.1 °F 54% 30.14 in 10.0 mi WSW 19.6 mph - N/A   Scattered Clouds
5:56 PM 57.9 °F 44.1 °F 60% 30.13 in 10.0 mi WSW 18.4 mph - N/A   Mostly Cloudy
6:56 PM 57.9 °F 45.0 °F 62% 30.11 in 10.0 mi WSW 18.4 mph - N/A   Mostly Cloudy
7:56 PM 55.0 °F 45.0 °F 69% 30.11 in 10.0 mi West 18.4 mph - N/A   Mostly Cloudy
8:56 PM 55.9 °F 45.0 °F 67% 30.10 in 10.0 mi West 10.4 mph - N/A   Mostly Cloudy
9:56 PM 55.0 °F 45.0 °F 69% 30.09 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
10:56 PM 55.0 °F 46.0 °F 72% 30.09 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
11:56 PM 54.0 °F 46.0 °F 75% 30.07 in 10.0 mi West 10.4 mph - N/A   Partly Cloudy