930  
CDUS46 KSEW 220217  
CLISEW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
617 PM PST THU DEC 21 2023  
   
...............................
 
 
   
..THE SEATTLE WA WFO CLIMATE SUMMARY FOR DECEMBER 21 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 48 MM 63 1940 30  
MINIMUM 42 MM 9 1990 21  
AVERAGE 45 26  
 
PRECIPITATION (IN)  
TODAY 0.00 2.19 2020 0.00  
MONTH TO DATE 6.73 2.30  
SINCE OCT 1 14.28 10.25  
SINCE JAN 1 33.48 33.33  
 
SNOWFALL (IN)  
TODAY 0.0 0.0  
MONTH TO DATE 0.0 1.6  
SINCE OCT 1 0.0 1.8  
SINCE JUL 1 0.0 1.8  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 20 39  
MONTH TO DATE 421 573  
SINCE DEC 1 421 573  
SINCE JUL 1 1297 1481  
 
COOLING  
TODAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 341 406    
.................................................
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
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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