483  
CDUS46 KSEW 190119  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
619 PM PDT SAT MAY 18 2024  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 18 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 58 1208 PM 89 1958 67 -9 76  
MINIMUM 47 717 AM 37 1950 49 -2 55  
2003  
AVERAGE 53 58 -5 66  
 
PRECIPITATION (IN)  
TODAY 0.19 0.72 2005 0.06 0.13 0.00  
MONTH TO DATE 0.49 1.15 -0.66 0.91  
SINCE OCT 1 31.04 33.98 -2.94 27.67  
SINCE JAN 1 13.89 18.04 -4.15 12.78  
 
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 12 7 5 0  
MONTH TO DATE 158 160 -2 92  
SINCE MAR 1 1127 1129 -2 1170  
SINCE JUL 1 4017 4176 -159 4257  
 
COOLING  
TODAY 0 0 0 1  
MONTH TO DATE 7 0 7 30  
SINCE MAR 1 7 1 6 30  
SINCE JAN 1 7 1 6 30    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (190)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 400 PM  
LOWEST 54 1100 AM  
AVERAGE 67  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 67 88 1963  
MINIMUM TEMPERATURE (F) 49 38 1975  
 
SUNRISE AND SUNSET  
MAY 18 2024...........SUNRISE 528 AM PDT SUNSET 844 PM PDT  
MAY 19 2024...........SUNRISE 527 AM PDT SUNSET 845 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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