075  
CDUS46 KSEW 210827  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE WA  
126 AM PDT SUN JUL 21 2019  
 
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JULY 20 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1945 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 80 524 PM 100 1994 77 3 74  
MINIMUM 56 510 AM 50 1962 56 0 55  
1955  
1953  
AVERAGE 68 66 2 65  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.60 2012 0.02 -0.02 0.00  
MONTH TO DATE 1.15 0.51 0.64 0.05  
SINCE OCT 1 31.30 34.92 -3.62 38.07  
SINCE JAN 1 16.02 19.52 -3.50 19.21  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 11 38 -27 9  
SINCE JUN 1 84 182 -98 111  
SINCE JUL 1 11 38 -27 9  
 
COOLING  
YESTERDAY 3 3 0 0  
MONTH TO DATE 38 40 -2 93  
SINCE JUN 1 76 61 15 129  
SINCE JAN 1 97 67 30 146    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION N (10)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 8.3  
 
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 500 AM  
LOWEST 30 500 PM  
AVERAGE 54  
   
......................................................
 
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 97 2006  
MINIMUM TEMPERATURE (F) 56 48 1951  
 
 
SUNRISE AND SUNSET  
JULY 21 2019..........SUNRISE 534 AM PDT SUNSET 857 PM PDT  
JULY 22 2019..........SUNRISE 535 AM PDT SUNSET 856 PM PDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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