683  
CDUS46 KMTR 040043  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
543 PM PDT SUN AUG 03 2025  
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 3 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 69 11:16 AM 91 1998 73 -4 70  
MINIMUM 56 5:30 AM 45 1954 56 0 54  
AVERAGE 63 64 -1 62  
 
PRECIPITATION (IN)  
TODAY 0.00 0.01 1953 0.00 0.00 T  
MONTH TO DATE 0.00 0.00 0.00 T  
SINCE OCT 1 16.11 19.53 -3.42 20.13  
SINCE JAN 1 7.55 12.56 -5.01 14.80  
 
SNOWFALL (IN)  
TODAY MM 0.0  
MONTH TO DATE T  
SINCE JUN 1 T  
SINCE JUL 1 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 2 2 0 3  
MONTH TO DATE 8 6 2 11  
SINCE JUN 1 220 161 59 174  
SINCE JUL 1 77 64 13 61  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 0 3 -3 0  
SINCE JUN 1 2 52 -50 49  
SINCE JAN 1 8 72 -64 60    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION W (280)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 12.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 3:00 AM  
LOWEST 55 4:00 PM  
AVERAGE 71  
   
......................................................
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 87 1998  
MINIMUM TEMPERATURE (F) 56 50 1945  
1949  
1966  
 
SUNRISE AND SUNSET  
AUGUST 3 2025........SUNRISE 6:15 AM PDT SUNSET 8:15 PM PDT  
AUGUST 4 2025........SUNRISE 6:16 AM PDT SUNSET 8:14 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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