360  
CDUS46 KSEW 090927  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
127 AM PST FRI DEC 09 2022  
   
...............................
 
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 8 2022...  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2022  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 43 607 AM 60 2015 48 -5 49  
MINIMUM 37 1159 PM 13 1972 37 0 38  
AVERAGE 40 42 -2 44  
 
PRECIPITATION (IN)  
YESTERDAY 0.10 2.13 2015 0.19 -0.09 0.03  
MONTH TO DATE 1.00 1.52 -0.52 0.78  
SINCE OCT 1 8.34 11.74 -3.40 16.80  
SINCE JAN 1 33.72 35.14 -1.42 40.03  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.2 1971 0.0  
MONTH TO DATE 3.4 T  
SINCE OCT 1 4.5 T  
SINCE JUL 1 4.5 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 25 23 2 21  
MONTH TO DATE 222 177 45 170  
SINCE DEC 1 222 177 45 170  
SINCE JUL 1 1172 1238 -66 1229  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 394 263 131 377    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION S (160)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 9.1  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 900 AM  
LOWEST 70 100 AM  
AVERAGE 82  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 47 61 2014  
MINIMUM TEMPERATURE (F) 37 18 2009  
 
SUNRISE AND SUNSET  
DECEMBER 9 2022......SUNRISE 745 AM PST SUNSET 418 PM PST  
DECEMBER 10 2022......SUNRISE 746 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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