508  
CDUS46 KSEW 220839  
CLISEW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE WA  
139 AM PDT SAT JUL 22 2017  
 
   
...............................
 
 
   
..THE SEATTLE WA WFO CLIMATE SUMMARY FOR JULY 21 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 79 MM 95 2006 81  
MINIMUM 55 MM 52 2003 59  
AVERAGE 67 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.22 2007 0.00  
MONTH TO DATE 0.00 0.39  
SINCE OCT 1 48.34 41.99  
SINCE JAN 1 26.62 21.59  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0  
MONTH TO DATE 1 9  
SINCE JUN 1 100 86  
SINCE JUL 1 1 9  
 
COOLING  
YESTERDAY 2 5  
MONTH TO DATE 30 33  
SINCE JUN 1 63 76  
SINCE JAN 1 72 87    
................................................
 
 
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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