634  
CDUS46 KSEW 110218  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
618 PM PST SUN DEC 10 2023  
   
...............................  
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 10 2023...  
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 53 334 PM 66 2014 47 6 46  
MINIMUM 44 314 AM 16 2009 37 7 40  
AVERAGE 49 42 7 43  
 
PRECIPITATION (IN)  
TODAY 0.14 1.55 1977 0.19 -0.05 0.30  
MONTH TO DATE 6.56 1.89 4.67 2.01  
SINCE OCT 1 15.23 12.11 3.12 9.35  
SINCE JAN 1 33.05 35.51 -2.46 34.73  
 
SNOWFALL (IN)  
TODAY MM 2.8 1992 0.0  
MONTH TO DATE 0.0 3.4  
SINCE OCT 1 0.0 4.5  
SINCE JUL 1 0.0 4.5  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 16 23 -7 22  
MONTH TO DATE 185 223 -38 269  
SINCE DEC 1 185 223 -38 269  
SINCE JUL 1 1188 1284 -96 1219  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 378 263 115 394    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION S (190)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 8.3  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 900 AM  
LOWEST 83 200 PM  
AVERAGE 90  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 47 58 2014  
MINIMUM TEMPERATURE (F) 37 21 2009  
 
SUNRISE AND SUNSET  
DECEMBER 10 2023......SUNRISE 746 AM PST SUNSET 418 PM PST  
DECEMBER 11 2023......SUNRISE 747 AM PST SUNSET 418 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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