563  
CDUS46 KSEW 220826  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
126 AM PDT MON APR 22 2024  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 21 2024
 
 
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)  
YESTERDAY  
MAXIMUM 58 413 PM 76 1982 60 -2 52  
MINIMUM 42 504 AM 29 1951 44 -2 43  
AVERAGE 50 52 -2 48  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 0.87 2010 0.10 -0.07 0.00  
MONTH TO DATE 0.43 2.38 -1.95 3.23  
SINCE OCT 1 30.09 32.03 -1.94 26.13  
SINCE JAN 1 12.94 16.09 -3.15 11.24  
 
SNOWFALL (IN)  
YESTERDAY MM MM MM 0.0  
MONTH TO DATE 0.0 T  
SINCE OCT 1 0.3 8.1  
SINCE JUL 1 0.3 8.1  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 15 13 2 17  
MONTH TO DATE 308 306 2 408  
SINCE MAR 1 857 863 -6 1000  
SINCE JUL 1 3747 3910 -163 4087  
 
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 3 RESULTANT WIND DIRECTION SW (220)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 10.7  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79 100 AM  
LOWEST 49 400 PM  
AVERAGE 64  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 78 1977  
2005  
MINIMUM TEMPERATURE (F) 44 35 1950  
1964  
1972  
 
SUNRISE AND SUNSET  
APRIL 22 2024.........SUNRISE 607 AM PDT SUNSET 809 PM PDT  
APRIL 23 2024.........SUNRISE 605 AM PDT SUNSET 811 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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