036  
CDUS46 KSEW 050219  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
619 PM PST MON DEC 04 2023  
   
...............................
 
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 4 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 56 459 PM 60 1945 48 8 38  
MINIMUM 43 113 AM 21 1994 38 5 32  
AVERAGE 50 43 7 35  
 
PRECIPITATION (IN)  
TODAY 0.49 1.41 1989 0.19 0.30 0.31  
MONTH TO DATE 1.77 0.76 1.01 0.85  
SINCE OCT 1 10.44 10.98 -0.54 8.19  
SINCE JAN 1 28.26 34.38 -6.12 33.57  
 
SNOWFALL (IN)  
TODAY MM 0.4 1956 0.1  
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 15 22 -7 30  
MONTH TO DATE 70 88 -18 121  
SINCE DEC 1 70 88 -18 121  
SINCE JUL 1 1073 1149 -76 1071  
 
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 4 RESULTANT WIND DIRECTION SE (140)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 5.1  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 100 PM  
LOWEST 76 400 AM  
AVERAGE 87  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 48 58 2020  
MINIMUM TEMPERATURE (F) 38 23 1956  
2013  
 
SUNRISE AND SUNSET  
DECEMBER 4 2023......SUNRISE 739 AM PST SUNSET 419 PM PST  
DECEMBER 5 2023......SUNRISE 740 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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