710  
CDUS46 KSEW 190120  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
620 PM PDT SUN JUN 18 2023  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JUNE 18 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 62 119 PM 94 1982 71 -9 63  
MINIMUM 47 457 AM 43 1954 53 -6 52  
AVERAGE 55 62 -7 58  
 
PRECIPITATION (IN)  
TODAY 0.04 0.41 2011 0.05 -0.01 0.01  
MONTH TO DATE 0.66 0.96 -0.30 2.62  
SINCE OCT 1 28.35 35.67 -7.32 44.95  
SINCE JAN 1 13.46 19.73 -6.27 24.85  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 8.1 9.2  
SINCE JUL 1 8.1 9.2  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 10 4 6 7  
MONTH TO DATE 83 83 0 113  
SINCE JUN 1 83 83 0 113  
SINCE JUL 1 4404 4341 63 4827  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 17 18 -1 0  
SINCE JUN 1 17 18 -1 0  
SINCE JAN 1 52 28 24 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 9.1  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 400 PM  
LOWEST 47 100 PM  
AVERAGE 65  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 92 1982  
MINIMUM TEMPERATURE (F) 53 43 1951  
1955  
 
SUNRISE AND SUNSET  
JUNE 18 2023..........SUNRISE 512 AM PDT SUNSET 909 PM PDT  
JUNE 19 2023..........SUNRISE 512 AM PDT SUNSET 909 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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