058  
CDUS46 KSEW 130927  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
127 AM PST MON JAN 13 2025  
   
...............................  
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JANUARY 12 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 43 353 PM 59 1986 48 -5 25  
2019  
MINIMUM 35 500 AM 13 1963 38 -3 15  
AVERAGE 39 43 -4 20  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 2.33 2021 0.19 -0.18 T  
MONTH TO DATE 1.01 2.30 -1.29 2.28  
SINCE OCT 1 14.40 18.24 -3.84 19.43  
SINCE JAN 1 1.01 2.30 -1.29 2.28  
 
SNOWFALL (IN)  
YESTERDAY MM 1.8 1969 T  
MONTH TO DATE 0.0 T  
SINCE OCT 1 0.0 T  
SINCE JUL 1 0.0 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 26 22 4 45  
MONTH TO DATE 263 272 -9 304  
SINCE DEC 1 909 983 -74 900  
SINCE JUL 1 1950 2044 -94 1903  
 
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 3 RESULTANT WIND DIRECTION NE (50)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 4.2  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 500 AM  
LOWEST 82 700 PM  
AVERAGE 91  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 48 58 2018  
MINIMUM TEMPERATURE (F) 38 11 1950  
 
SUNRISE AND SUNSET  
JANUARY 13 2025.......SUNRISE 753 AM PST SUNSET 444 PM PST  
JANUARY 14 2025.......SUNRISE 752 AM PST SUNSET 445 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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