San Francisco, CA

9:12 AM PDT on July 19, 2019 (GMT -0700)
San Francisco International

Weather History for KSFO - May, 2019

Change the Weather History Date:

Tuesday, May 21, 2019

  Actual Average Record
Temperature  
Mean Temperature 57 °F 60 °F  
Max Temperature 62 °F 68 °F 92 °F (2000)
Min Temperature 52 °F 52 °F 45 °F (1974)
Degree Days  
Heating Degree Days 8 5  
Month to date heating degree days 138 131  
Since 1 July heating degree days 2257 2499  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 9 6  
Growing Degree Days 7 (Base 50)    
Moisture  
Dew Point 49 °F    
Average Humidity 74    
Maximum Humidity 86    
Minimum Humidity 62    
Precipitation  
Precipitation 0.10 in 0.01 in 0.24 in (2006)
Month to date precipitation 2.00 0.36  
Year to date precipitation 18.43 12.86  
Sea Level Pressure  
Sea Level Pressure 29.92 in    
Wind  
Wind Speed 18 mph (West)    
Max Wind Speed 30 mph    
Max Gust Speed 37 mph    
Visibility 8 miles    
Events Rain    
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. 21, 2019 Rise Set
Actual Time 5:55 AM PDT 8:17 PM PDT
Civil Twilight 5:25 AM PDT 8:46 PM PDT
Nautical Twilight 4:49 AM PDT 9:23 PM PDT
Astronomical Twilight 4:08 AM PDT 10:04 PM PDT
Moon 11:16 PM PDT (5/21) 8:16 AM PDT (5/21)
Length of Visible Light 15h 21m
Length of Day
14h 21m
Waning Gibbous, 91% of the Moon is Illuminated
May 21
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 55.9 °F 51.1 °F 84% 29.95 in 9.0 mi South 9.2 mph - 0.02 in   Overcast
1:36 AM 55.9 °F 51.1 °F 84% 29.94 in 2.5 mi SW 6.9 mph - 0.02 in Rain Rain
1:56 AM 55.0 °F 48.9 °F 80% 29.94 in 10.0 mi WSW 11.5 mph - 0.04 in   Overcast
2:56 AM 55.9 °F 48.9 °F 77% 29.93 in 9.0 mi WSW 9.2 mph - N/A   Overcast
3:56 AM 55.9 °F 50.0 °F 80% 29.94 in 8.0 mi West 12.7 mph - N/A   Overcast
4:56 AM 53.1 °F 48.0 °F 83% 29.95 in 4.0 mi WNW 17.3 mph 31.1 mph 0.00 in Rain Light Rain
5:56 AM 54.0 °F 48.0 °F 80% 29.94 in 8.0 mi West 10.4 mph - 0.00 in   Mostly Cloudy
6:56 AM 54.0 °F 48.0 °F 80% 29.94 in 10.0 mi WSW 5.8 mph - 0.00 in   Mostly Cloudy
7:17 AM 55.0 °F 48.9 °F 80% 29.95 in 9.0 mi WSW 12.7 mph - N/A   Mostly Cloudy
7:56 AM 55.9 °F 48.9 °F 77% 29.94 in 9.0 mi West 13.8 mph 21.9 mph 0.00 in   Mostly Cloudy
8:56 AM 55.0 °F 50.0 °F 83% 29.95 in 4.0 mi West 17.3 mph - 0.01 in   Haze
9:56 AM 55.9 °F 50.0 °F 80% 29.95 in 9.0 mi West 15.0 mph - 0.00 in   Mostly Cloudy
10:56 AM 57.9 °F 51.1 °F 78% 29.95 in 9.0 mi West 20.7 mph 27.6 mph 0.01 in   Mostly Cloudy
11:43 AM 59.0 °F 48.9 °F 69% 29.95 in 9.0 mi West 23.0 mph 32.2 mph N/A   Mostly Cloudy
11:56 AM 57.0 °F 48.9 °F 74% 29.94 in 9.0 mi West 23.0 mph 31.1 mph N/A   Overcast
12:56 PM 60.1 °F 48.9 °F 67% 29.95 in 9.0 mi West 19.6 mph 32.2 mph 0.00 in   Overcast
1:56 PM 60.1 °F 48.0 °F 64% 29.94 in 9.0 mi West 24.2 mph 32.2 mph N/A   Overcast
2:56 PM 59.0 °F 46.9 °F 64% 29.93 in 9.0 mi West 26.5 mph 33.4 mph N/A   Mostly Cloudy
3:56 PM 57.9 °F 51.1 °F 78% 29.91 in 8.0 mi West 24.2 mph 31.1 mph 0.00 in   Mostly Cloudy
4:56 PM 57.9 °F 48.9 °F 72% 29.90 in 8.0 mi West 25.3 mph 35.7 mph 0.01 in   Mostly Cloudy
5:56 PM 57.9 °F 48.0 °F 70% 29.89 in 9.0 mi West 24.2 mph 33.4 mph N/A   Mostly Cloudy
6:56 PM 55.9 °F 46.9 °F 72% 29.88 in 9.0 mi WNW 25.3 mph 33.4 mph N/A   Mostly Cloudy
7:56 PM 55.9 °F 48.0 °F 75% 29.88 in 8.0 mi West 21.9 mph 32.2 mph 0.00 in   Mostly Cloudy
8:56 PM 54.0 °F 50.0 °F 86% 29.88 in 3.0 mi WNW 16.1 mph - 0.02 in Rain Rain
9:05 PM 53.1 °F 50.0 °F 89% 29.88 in 5.0 mi WNW 15.0 mph - 0.00 in   Overcast
9:56 PM 55.0 °F 48.9 °F 80% 29.89 in 8.0 mi WNW 18.4 mph - 0.01 in   Mostly Cloudy
10:56 PM 53.1 °F 48.9 °F 86% 29.89 in 5.0 mi WNW 17.3 mph - N/A   Overcast
11:56 PM 53.1 °F 48.9 °F 86% 29.87 in 8.0 mi West 18.4 mph - 0.00 in   Mostly Cloudy