115  
CDUS46 KSEW 010119  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
619 PM PDT TUE APR 30 2024  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 30 2024
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 56 451 PM 85 1976 63 -7 61  
MINIMUM 41 520 AM 32 1954 46 -5 48  
AVERAGE 49 54 -5 55  
 
PRECIPITATION (IN)  
TODAY 0.02 0.87 1987 0.08 -0.06 0.00  
MONTH TO DATE 0.89 3.18 -2.29 3.86  
SINCE OCT 1 30.55 32.83 -2.28 26.76  
SINCE JAN 1 13.40 16.89 -3.49 11.87  
 
SNOWFALL (IN)  
TODAY 0.0 T 1954 0.0  
MONTH TO DATE 0.0 T  
SINCE OCT 1 0.3 8.1  
SINCE JUL 1 0.3 8.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 16 11 5 10  
MONTH TO DATE 420 412 8 486  
SINCE MAR 1 969 969 0 1078  
SINCE JUL 1 3859 4016 -157 4165  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 1 -1 0  
SINCE MAR 1 0 1 -1 0  
SINCE JAN 1 0 1 -1 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 6.8  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 200 AM  
LOWEST 45 400 PM  
AVERAGE 65  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 63 85 2014  
MINIMUM TEMPERATURE (F) 46 28 1954  
 
SUNRISE AND SUNSET  
APRIL 30 2024.........SUNRISE 553 AM PDT SUNSET 821 PM PDT  
MAY 1 2024...........SUNRISE 551 AM PDT SUNSET 822 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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