349  
CDUS46 KSEW 240116  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
616 PM PDT MON SEP 23 2024  
   
...............................
 
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 23 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 73 414 PM 84 1947 69 4 64  
MINIMUM 60 503 AM 40 1948 52 8 54  
AVERAGE 67 61 6 59  
 
PRECIPITATION (IN)  
TODAY T 1.08 2020 0.06 -0.06 0.15  
MONTH TO DATE 0.41 1.13 -0.72 0.85  
SINCE OCT 1 35.51 38.86 -3.35 30.12  
SINCE JAN 1 18.36 22.92 -4.56 15.23  
 
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 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 5 -5 6  
MONTH TO DATE 65 64 1 50  
SINCE SEP 1 65 64 1 50  
SINCE JUL 1 103 119 -16 62  
 
COOLING  
TODAY 2 0 2 0  
MONTH TO DATE 39 30 9 26  
SINCE SEP 1 39 30 9 26  
SINCE JAN 1 312 263 49 378    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (190)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 6.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 700 AM  
LOWEST 64 300 PM  
AVERAGE 79  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 89 1974  
MINIMUM TEMPERATURE (F) 52 38 1948  
 
SUNRISE AND SUNSET  
SEPTEMBER 23 2024.....SUNRISE 658 AM PDT SUNSET 703 PM PDT  
SEPTEMBER 24 2024.....SUNRISE 700 AM PDT SUNSET 701 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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