969  
CDUS46 KMTR 100038  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
538 PM PDT SAT AUG 09 2025  
   
...............................  
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 9 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 75 1:51 PM 95 1970 73 2 65  
MINIMUM 57 6:20 AM 48 1954 56 1 51  
AVERAGE 66 65 1 58  
 
PRECIPITATION (IN)  
TODAY 0.00 0.02 1962 0.00 0.00 0.00  
MONTH TO DATE 0.00 0.01 -0.01 T  
SINCE OCT 1 16.11 19.54 -3.43 20.13  
SINCE JAN 1 7.55 12.57 -5.02 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 0 2 -2 7  
MONTH TO DATE 10 18 -8 34  
SINCE JUN 1 222 173 49 197  
SINCE JUL 1 79 76 3 84  
 
COOLING  
TODAY 1 1 0 0  
MONTH TO DATE 6 9 -3 0  
SINCE JUN 1 8 58 -50 49  
SINCE JAN 1 14 78 -64 60    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 10.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 7:00 AM  
LOWEST 53 2:00 PM  
AVERAGE 73  
   
......................................................  
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 87 2009  
MINIMUM TEMPERATURE (F) 56 47 1951  
 
SUNRISE AND SUNSET  
AUGUST 9 2025........SUNRISE 6:21 AM PDT SUNSET 8:09 PM PDT  
AUGUST 10 2025........SUNRISE 6:21 AM PDT SUNSET 8:08 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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