540  
CDUS46 KMTR 270831  
CLISFD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
131 AM PDT SAT SEP 27 2025  
   
...............................
 
 
   
..THE SAN FRANCISCO DWTN CA CLIMATE SUMMARY FOR SEPTEMBER 26 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1850 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 72 2:43 PM 94 1992 71 1 67  
MINIMUM 58 4:43 AM 48 1955 56 2 56  
AVERAGE 65 63 2 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.40 1972 0.01 -0.01 0.00  
MONTH TO DATE 0.08 0.07 0.01 0.00  
SINCE OCT 1 19.96 22.86 -2.90 25.76  
SINCE JAN 1 9.76 14.56 -4.80 19.08  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 3 -3 3  
MONTH TO DATE 26 80 -54 89  
SINCE SEP 1 26 80 -54 89  
SINCE JUL 1 271 350 -79 277  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 30 26 4 14  
SINCE SEP 1 30 26 4 14  
SINCE JAN 1 49 76 -27 42    
...............................................................
 
 
THE SAN FRANCISCO DWTN CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 93 2010  
MINIMUM TEMPERATURE (F) 56 48 1926  
 
SUNRISE AND SUNSET  
SEPTEMBER 27 2025.....SUNRISE 7:02 AM PDT SUNSET 6:58 PM PDT  
SEPTEMBER 28 2025.....SUNRISE 7:03 AM PDT SUNSET 6:57 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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