810  
CDUS46 KSEW 140928  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
128 AM PST SAT DEC 14 2024  
   
...............................  
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 13 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 46 1112 PM 59 1952 47 -1 51  
MINIMUM 41 705 AM 19 1972 37 4 34  
AVERAGE 44 42 2 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.52 1.63 2001 0.18 0.34 0.00  
MONTH TO DATE 1.14 2.43 -1.29 6.56  
SINCE OCT 1 9.04 12.65 -3.61 15.23  
SINCE JAN 1 27.82 36.05 -8.23 33.05  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.8 2008 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 0.0 0.0  
SINCE JUL 1 0.0 0.0  
SNOW DEPTH 0.0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 21 23 -2 22  
MONTH TO DATE 313 292 21 253  
SINCE DEC 1 313 292 21 253  
SINCE JUL 1 1354 1353 1 1256  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 315 263 52 378    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SE (120)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SE (120)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SE (130)  
AVERAGE WIND SPEED 9.5  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 100 AM  
LOWEST 73 800 AM  
AVERAGE 85  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 47 59 2002  
MINIMUM TEMPERATURE (F) 37 18 1945  
 
SUNRISE AND SUNSET  
DECEMBER 14 2024......SUNRISE 750 AM PST SUNSET 419 PM PST  
DECEMBER 15 2024......SUNRISE 751 AM PST SUNSET 419 PM PST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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