751  
CDUS46 KSEW 110837  
CLISEW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE WA  
1237 AM PST MON DEC 11 2017  
 
   
...............................
 
 
   
..THE SEATTLE WA WFO CLIMATE SUMMARY FOR DECEMBER 10 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1986 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR LAST  
VALUE (LST) VALUE YEAR    
................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 49 MM 65 2014 43  
MINIMUM 33 MM 19 2009 38  
AVERAGE 41 41  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.45 1992 0.16  
MONTH TO DATE 0.91 1.44  
SINCE OCT 1 12.95 19.45  
SINCE JAN 1 40.91 42.76  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0  
MONTH TO DATE 0.0 1.4  
SINCE OCT 1 T 1.4  
SINCE JUL 1 T 1.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 24 24  
MONTH TO DATE 233 254  
SINCE DEC 1 233 254  
SINCE JUL 1 1208 1065  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 345 260    
................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED MM HIGHEST WIND DIRECTION MM  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED MM  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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