796  
CDUS46 KMTR 280825  
CLISFO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1225 AM PST THU DEC 28 2023  
   
...............................
 
 
   
..THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 27 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1927 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 61 10:43 AM 70 1953 57 4 62  
MINIMUM 53 12:16 AM 33 1954 44 9 50  
1962  
AVERAGE 57 51 6 56  
 
PRECIPITATION (IN)  
YESTERDAY 0.21 2.24 2004 0.14 0.07 1.36  
MONTH TO DATE 2.73 3.61 -0.88 5.02  
SINCE OCT 1 4.15 6.44 -2.29 6.61  
SINCE JAN 1 24.35 19.11 5.24 8.78  
 
SNOWFALL (IN)  
YESTERDAY MM 0.0  
MONTH TO DATE T  
SINCE DEC 1 T  
SINCE JUL 1 T  
 
DEGREE DAYS  
HEATING  
YESTERDAY 8 14 -6 9  
MONTH TO DATE 245 363 -118 409  
SINCE DEC 1 245 363 -118 409  
SINCE JUL 1 468 871 -403 934  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 280 201 79 280    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SE (140)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION SE (130)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 10.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 3:00 PM  
LOWEST 69 1:00 AM  
AVERAGE 79  
   
......................................................
 
 
THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 71 1967  
MINIMUM TEMPERATURE (F) 44 32 1966  
 
SUNRISE AND SUNSET  
DECEMBER 28 2023......SUNRISE 7:24 AM PST SUNSET 4:59 PM PST  
DECEMBER 29 2023......SUNRISE 7:24 AM PST SUNSET 4:59 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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