791  
CDUS46 KSEW 100930  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
130 AM PST FRI JAN 10 2025  
   
...............................
 
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JANUARY 9 2025...  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 52 212 PM 60 1945 47 5 48  
MINIMUM 38 555 AM 13 1949 38 0 37  
AVERAGE 45 42 3 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.83 1990 0.20 -0.20 0.27  
MONTH TO DATE 0.86 1.73 -0.87 2.25  
SINCE OCT 1 14.25 17.67 -3.42 19.40  
SINCE JAN 1 0.86 1.73 -0.87 2.25  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.0 1963 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  
 
DEGREE DAYS  
HEATING  
YESTERDAY 20 22 -2 22  
MONTH TO DATE 193 206 -13 202  
SINCE DEC 1 839 917 -78 798  
SINCE JUL 1 1880 1978 -98 1801  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NE (50)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (130)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 4.6  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 600 AM  
LOWEST 71 200 PM  
AVERAGE 86  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 48 59 1981  
MINIMUM TEMPERATURE (F) 38 12 1949  
 
SUNRISE AND SUNSET  
JANUARY 10 2025.......SUNRISE 755 AM PST SUNSET 440 PM PST  
JANUARY 11 2025.......SUNRISE 754 AM PST SUNSET 441 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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