331  
CDUS46 KMTR 240033  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
533 PM PDT SAT AUG 23 2025  
   
...............................  
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 23 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 1:30 PM 92 2010 74 -5 67  
MINIMUM 55 1:46 AM 49 1953 57 -2 56  
AVERAGE 62 65 -3 62  
 
PRECIPITATION (IN)  
TODAY 0.00 T 1989 0.00 0.00 0.00  
1991  
1994  
MONTH TO DATE T 0.03 -0.03 T  
SINCE OCT 1 16.11 19.56 -3.45 20.13  
SINCE JAN 1 7.55 12.59 -5.04 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 3 1 2 3  
MONTH TO DATE 21 33 -12 77  
SINCE JUN 1 233 188 45 240  
SINCE JUL 1 90 91 -1 127  
 
COOLING  
TODAY 0 2 -2 0  
MONTH TO DATE 21 26 -5 1  
SINCE JUN 1 23 75 -52 50  
SINCE JAN 1 29 95 -66 61    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 15 RESULTANT WIND DIRECTION W (290)  
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 15.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 12:00 AM  
LOWEST 65 1:00 PM  
AVERAGE 79  
   
......................................................  
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 99 2010  
MINIMUM TEMPERATURE (F) 56 49 1955  
 
SUNRISE AND SUNSET  
AUGUST 23 2025........SUNRISE 6:33 AM PDT SUNSET 7:51 PM PDT  
AUGUST 24 2025........SUNRISE 6:33 AM PDT SUNSET 7:49 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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