911  
CDUS46 KSEW 100116  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
616 PM PDT WED APR 09 2025  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 9 2025
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 60 303 PM 73 1959 58 2 55  
MINIMUM 40 433 AM 33 1945 42 -2 46  
AVERAGE 50 50 0 51  
 
PRECIPITATION (IN)  
TODAY 0.00 0.96 1971 0.12 -0.12 0.04  
MONTH TO DATE 1.59 1.07 0.52 0.40  
SINCE OCT 1 25.55 30.72 -5.17 30.27  
SINCE JAN 1 12.15 14.78 -2.63 13.12  
 
SNOWFALL (IN)  
TODAY 0.0 T 1991 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 2.3 0.3  
SINCE JUL 1 2.3 0.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 15 15 0 14  
MONTH TO DATE 128 140 -12 147  
SINCE MAR 1 674 697 -23 696  
SINCE JUL 1 3831 3744 87 3607  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 6.2  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 400 AM  
LOWEST 46 300 PM  
AVERAGE 70  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 74 1988  
2004  
MINIMUM TEMPERATURE (F) 43 30 1953  
 
SUNRISE AND SUNSET  
APRIL 9 2025.........SUNRISE 631 AM PDT SUNSET 751 PM PDT  
APRIL 10 2025.........SUNRISE 629 AM PDT SUNSET 752 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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