047  
CDUS46 KSEW 210827  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
127 AM PDT SAT JUN 21 2025  
   
...............................  
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JUNE 20 2025  
 
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)  
YESTERDAY  
MAXIMUM 63 452 PM 88 2004 72 -9 84  
2018  
MINIMUM 51 513 AM 43 1960 54 -3 56  
AVERAGE 57 63 -6 70  
 
PRECIPITATION (IN)  
YESTERDAY T 1.14 1984 0.05 -0.05 0.00  
MONTH TO DATE T 1.06 -1.06 1.16  
SINCE OCT 1 27.34 35.77 -8.43 33.46  
SINCE JAN 1 13.94 19.83 -5.89 16.31  
 
SNOWFALL (IN)  
YESTERDAY 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  
YESTERDAY 8 3 5 0  
MONTH TO DATE 70 90 -20 116  
SINCE JUN 1 70 90 -20 116  
SINCE JUL 1 4397 4348 49 4288  
 
COOLING  
YESTERDAY 0 1 -1 5  
MONTH TO DATE 28 20 8 6  
SINCE JUN 1 28 20 8 6  
SINCE JAN 1 31 30 1 13    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION SW (220)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 9.5  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 900 PM  
LOWEST 56 200 PM  
AVERAGE 68  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 89 1992  
2021  
MINIMUM TEMPERATURE (F) 54 43 1947  
 
SUNRISE AND SUNSET  
JUNE 21 2025..........SUNRISE 512 AM PDT SUNSET 910 PM PDT  
JUNE 22 2025..........SUNRISE 512 AM PDT SUNSET 910 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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