San Francisco, CA

11:56 AM PDT on June 18, 2019 (GMT -0700)
San Francisco International

Weather History for KSFO - May, 2019

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Monday, May 20, 2019

  Actual Average Record
Temperature  
Mean Temperature 56 °F 60 °F  
Max Temperature 64 °F 68 °F 93 °F (1988)
Min Temperature 48 °F 52 °F 45 °F (1982)
Degree Days  
Heating Degree Days 9 6  
Month to date heating degree days 130 126  
Since 1 July heating degree days 2249 2494  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 9 6  
Growing Degree Days 6 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 73    
Maximum Humidity 89    
Minimum Humidity 56    
Precipitation  
Precipitation 0.02 in 0.01 in 1.53 in (1957)
Month to date precipitation 1.90 0.35  
Year to date precipitation 18.33 12.85  
Sea Level Pressure  
Sea Level Pressure 29.97 in    
Wind  
Wind Speed 10 mph (WSW)    
Max Wind Speed 21 mph    
Max Gust Speed 24 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. 20, 2019 Rise Set
Actual Time 5:56 AM PDT 8:16 PM PDT
Civil Twilight 5:26 AM PDT 8:46 PM PDT
Nautical Twilight 4:49 AM PDT 9:22 PM PDT
Astronomical Twilight 4:09 AM PDT 10:03 PM PDT
Moon 10:21 PM PDT (5/20) 7:29 AM PDT (5/20)
Length of Visible Light 15h 19m
Length of Day
14h 20m
Waning Gibbous, 96% of the Moon is Illuminated
May 20
Waning Gibbous
May 26
Last Quarter
Jun 3
New
Jun 9
First Quarter
Jun 17
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 52.0 °F 48.0 °F 86% 29.89 in 10.0 mi SSE 5.8 mph - N/A   Scattered Clouds
1:56 AM 50.0 °F 46.9 °F 89% 29.90 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:56 AM 50.0 °F 46.0 °F 86% 29.90 in 10.0 mi WSW 3.5 mph - N/A   Scattered Clouds
3:56 AM 50.0 °F 46.0 °F 86% 29.91 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
4:56 AM 50.0 °F 46.9 °F 89% 29.92 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
5:56 AM 50.0 °F 46.9 °F 89% 29.92 in 10.0 mi West 5.8 mph - N/A   Mostly Cloudy
6:56 AM 50.0 °F 46.9 °F 89% 29.95 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
7:56 AM 55.0 °F 48.9 °F 80% 29.96 in 10.0 mi NW 5.8 mph - N/A   Partly Cloudy
8:37 AM 55.9 °F 48.0 °F 75% 29.97 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
8:56 AM 57.9 °F 48.9 °F 72% 29.98 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
9:56 AM 57.9 °F 48.0 °F 70% 29.99 in 10.0 mi West 16.1 mph - N/A   Mostly Cloudy
10:56 AM 57.9 °F 48.0 °F 70% 30.00 in 10.0 mi WSW 12.7 mph - N/A   Mostly Cloudy
11:56 AM 59.0 °F 48.0 °F 67% 30.01 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
12:56 PM 61.0 °F 48.0 °F 62% 30.02 in 10.0 mi WSW 13.8 mph - N/A   Mostly Cloudy
1:56 PM 62.1 °F 46.0 °F 56% 30.02 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
2:56 PM 62.1 °F 46.0 °F 56% 30.01 in 10.0 mi West 17.3 mph 21.9 mph N/A   Scattered Clouds
3:56 PM 62.1 °F 46.9 °F 58% 30.00 in 10.0 mi West 17.3 mph - N/A   Scattered Clouds
4:56 PM 61.0 °F 46.9 °F 60% 30.00 in 10.0 mi WSW 13.8 mph 21.9 mph N/A   Scattered Clouds
5:56 PM 59.0 °F 46.9 °F 64% 30.01 in 10.0 mi WSW 15.0 mph - N/A   Mostly Cloudy
6:56 PM 57.9 °F 46.9 °F 67% 30.00 in 10.0 mi SW 11.5 mph - N/A   Mostly Cloudy
7:56 PM 55.9 °F 46.0 °F 69% 30.00 in 10.0 mi WSW 9.2 mph - N/A   Mostly Cloudy
8:56 PM 55.0 °F 46.9 °F 74% 29.99 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
9:56 PM 55.9 °F 46.9 °F 72% 29.99 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
10:56 PM 55.0 °F 46.0 °F 72% 29.98 in 10.0 mi SW 5.8 mph - N/A   Mostly Cloudy
11:56 PM 55.9 °F 48.9 °F 77% 29.97 in 6.0 mi SSW 16.1 mph - N/A   Haze