906  
CDUS46 KMTR 200839  
CLISFD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
139 AM PDT TUE MAY 20 2025  
   
...............................
 
 
   
..THE SAN FRANCISCO DWTN CA CLIMATE SUMMARY FOR MAY 19 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 68 9:43 AM 90 1892 64 4 62  
MINIMUM 53 11:43 PM 45 1876 52 1 51  
AVERAGE 61 58 3 57  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.24 1925 0.02 -0.02 0.00  
MONTH TO DATE 0.15 0.48 -0.33 0.94  
SINCE OCT 1 19.75 22.30 -2.55 25.62  
SINCE JAN 1 9.55 14.00 -4.45 18.94  
 
DEGREE DAYS  
HEATING  
YESTERDAY 4 7 -3 8  
MONTH TO DATE 138 150 -12 138  
SINCE MAR 1 721 712 9 700  
SINCE JUL 1 2321 2530 -209 2120  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 4 0 4 4  
SINCE MAR 1 6 7 -1 6  
SINCE JAN 1 6 7 -1 6    
...............................................................
 
 
THE SAN FRANCISCO DWTN CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 64 92 1988  
MINIMUM TEMPERATURE (F) 52 43 1899  
 
SUNRISE AND SUNSET  
MAY 20 2025...........SUNRISE 5:56 AM PDT SUNSET 8:17 PM PDT  
MAY 21 2025...........SUNRISE 5:55 AM PDT SUNSET 8:18 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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