831  
CDUS46 KSEW 210124  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
624 PM PDT MON MAY 20 2024  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 20 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 64 435 PM 92 1963 67 -3 78  
MINIMUM 45 539 AM 40 1960 50 -5 54  
AVERAGE 55 58 -3 66  
 
PRECIPITATION (IN)  
TODAY 0.00 0.56 2007 0.05 -0.05 0.01  
MONTH TO DATE 0.54 1.26 -0.72 0.92  
SINCE OCT 1 31.09 34.09 -3.00 27.68  
SINCE JAN 1 13.94 18.15 -4.21 12.79  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 0.3 8.1  
SINCE JUL 1 0.3 8.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 10 7 3 0  
MONTH TO DATE 180 174 6 92  
SINCE MAR 1 1149 1143 6 1170  
SINCE JUL 1 4039 4190 -151 4257  
 
COOLING  
TODAY 0 0 0 1  
MONTH TO DATE 7 0 7 31  
SINCE MAR 1 7 1 6 31  
SINCE JAN 1 7 1 6 31    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 5.6  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 400 AM  
LOWEST 46 300 PM  
AVERAGE 64  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 67 93 1963  
MINIMUM TEMPERATURE (F) 50 39 1960  
 
SUNRISE AND SUNSET  
MAY 20 2024...........SUNRISE 526 AM PDT SUNSET 846 PM PDT  
MAY 21 2024...........SUNRISE 525 AM PDT SUNSET 848 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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