250  
CDUS46 KSEW 190831  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
131 AM PDT WED MAR 19 2025  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MARCH 18 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 50 255 PM 76 2019 55 -5 66  
MINIMUM 34 651 AM 29 1954 40 -6 44  
AVERAGE 42 47 -5 55  
 
PRECIPITATION (IN)  
YESTERDAY T 1.86 1997 0.14 -0.14 0.00  
MONTH TO DATE 2.51 2.50 0.01 1.14  
SINCE OCT 1 21.31 27.98 -6.67 28.65  
SINCE JAN 1 7.91 12.04 -4.13 11.50  
 
SNOWFALL (IN)  
YESTERDAY MM 0.8 1973 0.0  
MONTH TO DATE 0.0 0.3  
SINCE OCT 1 2.3 0.3  
SINCE JUL 1 2.3 0.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 23 18 5 10  
MONTH TO DATE 360 339 21 355  
SINCE MAR 1 360 339 21 355  
SINCE JUL 1 3517 3386 131 3266  
 
COOLING  
YESTERDAY 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 5 RESULTANT WIND DIRECTION S (160)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 6.8  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 200 AM  
LOWEST 50 300 PM  
AVERAGE 71  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 79 2019  
MINIMUM TEMPERATURE (F) 40 27 1965  
 
SUNRISE AND SUNSET  
MARCH 19 2025.........SUNRISE 713 AM PDT SUNSET 721 PM PDT  
MARCH 20 2025.........SUNRISE 711 AM PDT SUNSET 723 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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