088  
CDUS46 KMTR 030038  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
538 PM PDT TUE SEP 02 2025  
   
...............................  
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 2 2025  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1927 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 77 1:35 PM 104 2017 75 2 71  
MINIMUM 59 6:25 AM 49 1946 56 3 58  
AVERAGE 68 65 3 65  
 
PRECIPITATION (IN)  
TODAY 0.00 T 1979 0.00 0.00 0.00  
1985  
2000  
MONTH TO DATE 0.00 0.00 0.00 0.00  
SINCE OCT 1 16.11 19.57 -3.46 20.23  
SINCE JAN 1 7.55 12.60 -5.05 14.90  
 
SNOWFALL (IN)  
TODAY MM 0.0  
MONTH TO DATE T  
SINCE SEP 1 T  
SINCE JUL 1 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 0 2 -2 0  
MONTH TO DATE 0 4 -4 0  
SINCE SEP 1 0 4 -4 0  
SINCE JUL 1 90 106 -16 130  
 
COOLING  
TODAY 3 2 1 0  
MONTH TO DATE 5 4 1 0  
SINCE SEP 1 5 4 1 0  
SINCE JAN 1 55 114 -59 74    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 9.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 6:00 AM  
LOWEST 54 3:00 PM  
AVERAGE 71  
   
......................................................  
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 93 1961  
MINIMUM TEMPERATURE (F) 56 50 1945  
1947  
1970  
 
SUNRISE AND SUNSET  
SEPTEMBER 2 2025.....SUNRISE 6:41 AM PDT SUNSET 7:36 PM PDT  
SEPTEMBER 3 2025.....SUNRISE 6:42 AM PDT SUNSET 7:35 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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