281  
CDUS46 KMTR 170841  
CLISFD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1241 AM PST SUN DEC 17 2023  
   
...............................  
 
   
..THE SAN FRANCISCO DWTN CA CLIMATE SUMMARY FOR DECEMBER 16 2023  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1850 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 65 1:43 PM 71 1998 58 7 56  
MINIMUM 48 5:43 AM 37 1963 47 1 45  
AVERAGE 57 52 5 51  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.76 2002 0.16 -0.16 0.00  
MONTH TO DATE 0.39 2.40 -2.01 2.75  
SINCE OCT 1 2.42 5.94 -3.52 4.11  
SINCE JAN 1 23.33 20.53 2.80 7.00  
 
DEGREE DAYS  
HEATING  
YESTERDAY 8 13 -5 14  
MONTH TO DATE 155 191 -36 227  
SINCE DEC 1 155 191 -36 227  
SINCE JUL 1 664 919 -255 958  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 103 121 -18 110    
...............................................................  
 
THE SAN FRANCISCO DWTN CA CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 69 1996  
MINIMUM TEMPERATURE (F) 47 39 1924  
 
SUNRISE AND SUNSET  
DECEMBER 17 2023......SUNRISE 7:19 AM PST SUNSET 4:53 PM PST  
DECEMBER 18 2023......SUNRISE 7:20 AM PST SUNSET 4:53 PM PST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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