538  
CDUS46 KSEW 040826  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
126 AM PDT WED SEP 04 2024  
   
...............................  
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 3 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 72 350 PM 92 1988 75 -3 69  
MINIMUM 59 1136 PM 45 1956 56 3 57  
AVERAGE 66 65 1 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.91 1945 0.04 -0.04 0.06  
MONTH TO DATE T 0.12 -0.12 0.06  
SINCE OCT 1 35.10 37.85 -2.75 29.33  
SINCE JAN 1 17.95 21.91 -3.96 14.44  
 
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 0 2 -2 2  
MONTH TO DATE 0 6 -6 2  
SINCE SEP 1 0 6 -6 2  
SINCE JUL 1 36 61 -25 14  
 
COOLING  
YESTERDAY 1 2 -1 0  
MONTH TO DATE 8 6 2 12  
SINCE SEP 1 8 6 2 12  
SINCE JAN 1 281 239 42 364    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NW (310)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 5.8  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 400 AM  
LOWEST 59 500 PM  
AVERAGE 75  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 88 2017  
MINIMUM TEMPERATURE (F) 56 42 1952  
 
SUNRISE AND SUNSET  
SEPTEMBER 4 2024.....SUNRISE 633 AM PDT SUNSET 742 PM PDT  
SEPTEMBER 5 2024.....SUNRISE 634 AM PDT SUNSET 740 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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