565  
CDUS46 KSEW 270827  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
127 AM PDT FRI SEP 27 2024  
   
...............................  
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 26 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 68 143 PM 82 2022 68 0 65  
MINIMUM 51 553 AM 39 1972 52 -1 51  
AVERAGE 60 60 0 58  
 
PRECIPITATION (IN)  
YESTERDAY 0.08 1.51 1948 0.07 0.01 0.60  
MONTH TO DATE 0.59 1.32 -0.73 2.88  
SINCE OCT 1 35.69 39.05 -3.36 32.15  
SINCE JAN 1 18.54 23.11 -4.57 17.26  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 0.3 8.1  
SINCE JUL 1 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 5 5 0 7  
MONTH TO DATE 75 79 -4 70  
SINCE SEP 1 75 79 -4 70  
SINCE JUL 1 113 134 -21 82  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 42 30 12 26  
SINCE SEP 1 42 30 12 26  
SINCE JAN 1 315 263 52 378    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (190)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 7.5  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 900 PM  
LOWEST 45 100 PM  
AVERAGE 71  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 89 1967  
MINIMUM TEMPERATURE (F) 51 35 1972  
 
SUNRISE AND SUNSET  
SEPTEMBER 27 2024.....SUNRISE 704 AM PDT SUNSET 655 PM PDT  
SEPTEMBER 28 2024.....SUNRISE 705 AM PDT SUNSET 653 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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