812  
CDUS46 KSEW 280118  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
618 PM PDT SAT MAY 27 2023  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 27 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 70 448 PM 89 2005 68 2 62  
MINIMUM 53 429 AM 37 1966 51 2 49  
AVERAGE 62 59 3 56  
 
PRECIPITATION (IN)  
TODAY 0.00 0.83 1948 0.05 -0.05 T  
MONTH TO DATE 0.93 1.65 -0.72 3.44  
SINCE OCT 1 27.69 34.48 -6.79 41.95  
SINCE JAN 1 12.80 18.54 -5.74 21.85  
 
SNOWFALL (IN)  
TODAY 0.0 T 1951 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 0  
 
DEGREE DAYS  
HEATING  
TODAY 3 6 -3 9  
MONTH TO DATE 122 218 -96 332  
SINCE MAR 1 1200 1187 13 1414  
SINCE JUL 1 4287 4234 53 4671  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 35 0 35 0  
SINCE MAR 1 35 1 34 0  
SINCE JAN 1 35 1 34 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 8.4  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 300 AM  
LOWEST 45 400 PM  
AVERAGE 66  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 92 1983  
MINIMUM TEMPERATURE (F) 51 38 1954  
 
SUNRISE AND SUNSET  
MAY 27 2023...........SUNRISE 520 AM PDT SUNSET 853 PM PDT  
MAY 28 2023...........SUNRISE 519 AM PDT SUNSET 854 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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