355  
CDUS46 KSEW 010125  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
625 PM PDT MON JUN 30 2025  
   
...............................  
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JUNE 30 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 87 356 PM 96 1995 74 13 76  
MINIMUM 60 401 AM 43 1949 55 5 59  
AVERAGE 74 64 10 68  
 
PRECIPITATION (IN)  
TODAY 0.00 0.84 1954 0.03 -0.03 0.00  
MONTH TO DATE 0.42 1.45 -1.03 1.19  
SINCE OCT 1 27.76 36.16 -8.40 33.49  
SINCE JAN 1 14.36 20.22 -5.86 16.34  
 
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 0 2 -2 0  
MONTH TO DATE 94 117 -23 132  
SINCE JUN 1 94 117 -23 132  
SINCE JUL 1 4421 4375 46 4304  
 
COOLING  
TODAY 9 2 7 3  
MONTH TO DATE 42 29 13 19  
SINCE JUN 1 42 29 13 19  
SINCE JAN 1 45 39 6 26    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION N (0)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 8.9  
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 72 400 AM  
LOWEST 29 200 PM  
AVERAGE 51  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 94 2014  
MINIMUM TEMPERATURE (F) 55 45 1948  
1949  
1973  
 
SUNRISE AND SUNSET  
JUNE 30 2025..........SUNRISE 516 AM PDT SUNSET 910 PM PDT  
JULY 1 2025..........SUNRISE 517 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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