108  
CDUS46 KSEW 210932  
CLISEW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
132 AM PST THU DEC 21 2023  
   
...............................
 
 
   
..THE SEATTLE WA WFO CLIMATE SUMMARY FOR DECEMBER 20 2023
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1894 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR LAST  
VALUE (LST) VALUE YEAR    
.................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 51 MM 60 1919 38  
MINIMUM 37 MM 11 1990 29  
AVERAGE 44 34  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 2.64 2019 0.49  
MONTH TO DATE 6.73 2.30  
SINCE OCT 1 14.28 10.25  
SINCE JAN 1 33.48 33.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 1.2  
MONTH TO DATE 0.0 1.6  
SINCE OCT 1 0.0 1.8  
SINCE JUL 1 0.0 1.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 21 31  
MONTH TO DATE 401 534  
SINCE DEC 1 401 534  
SINCE JUL 1 1277 1442  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 341 406    
.................................................
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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