990  
CDUS46 KSEW 130125  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
625 PM PDT MON AUG 12 2024  
   
...............................
 
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 12 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 73 321 PM 96 1977 78 -5 82  
MINIMUM 57 553 AM 49 1949 58 -1 63  
1950  
1953  
AVERAGE 65 68 -3 73  
 
PRECIPITATION (IN)  
TODAY 0.00 0.56 1965 0.03 -0.03 0.00  
MONTH TO DATE 0.00 0.29 -0.29 0.04  
SINCE OCT 1 33.44 37.05 -3.61 29.04  
SINCE JAN 1 16.29 21.11 -4.82 14.15  
 
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 1 -1 0  
MONTH TO DATE 2 5 -3 0  
SINCE JUN 1 141 154 -13 114  
SINCE JUL 1 9 36 -27 2  
 
COOLING  
TODAY 0 4 -4 8  
MONTH TO DATE 53 48 5 61  
SINCE JUN 1 236 173 63 209  
SINCE JAN 1 243 183 60 244    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 9.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 300 AM  
LOWEST 40 200 PM  
AVERAGE 60  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 92 2002  
MINIMUM TEMPERATURE (F) 58 44 1955  
 
SUNRISE AND SUNSET  
AUGUST 12 2024........SUNRISE 602 AM PDT SUNSET 825 PM PDT  
AUGUST 13 2024........SUNRISE 604 AM PDT SUNSET 823 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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