439  
CDUS46 KSEW 110116  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
616 PM PDT SAT MAY 10 2025  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 10 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 62 413 PM 87 2020 65 -3 84  
MINIMUM 49 320 AM 37 1947 48 1 52  
AVERAGE 56 56 0 68  
 
PRECIPITATION (IN)  
TODAY T 0.61 2000 0.07 -0.07 0.00  
MONTH TO DATE T 0.68 -0.68 0.28  
SINCE OCT 1 26.51 33.51 -7.00 31.04  
SINCE JAN 1 13.11 17.57 -4.46 13.89  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 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 9 9 0 0  
MONTH TO DATE 86 97 -11 111  
SINCE MAR 1 1013 1066 -53 1080  
SINCE JUL 1 4170 4113 57 3991  
 
COOLING  
TODAY 0 0 0 3  
MONTH TO DATE 0 0 0 3  
SINCE MAR 1 0 1 -1 3  
SINCE JAN 1 0 1 -1 3    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION W (250)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 6.7  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 71 700 AM  
LOWEST 44 400 PM  
AVERAGE 58  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 87 1971  
MINIMUM TEMPERATURE (F) 48 35 1953  
 
SUNRISE AND SUNSET  
MAY 10 2025...........SUNRISE 538 AM PDT SUNSET 834 PM PDT  
MAY 11 2025...........SUNRISE 537 AM PDT SUNSET 835 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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