854  
CDUS46 KSEW 190826  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
126 AM PDT FRI APR 19 2024  
   
...............................  
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 18 2024  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 64 154 PM 89 2016 60 4 48  
MINIMUM 39 418 AM 34 1950 44 -5 38  
1961  
1964  
AVERAGE 52 52 0 43  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.48 2017 0.10 -0.10 0.12  
MONTH TO DATE 0.40 2.07 -1.67 2.90  
SINCE OCT 1 30.06 31.72 -1.66 25.80  
SINCE JAN 1 12.91 15.78 -2.87 10.91  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0  
MONTH TO DATE 0.0 T  
SINCE OCT 1 0.3 8.1  
SINCE JUL 1 0.3 8.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 13 13 0 22  
MONTH TO DATE 279 267 12 348  
SINCE MAR 1 828 824 4 940  
SINCE JUL 1 3718 3871 -153 4027  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION N (10)  
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION N (360)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 11.2  
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 76 600 AM  
LOWEST 21 400 PM  
AVERAGE 49  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 84 2016  
MINIMUM TEMPERATURE (F) 44 33 1961  
 
SUNRISE AND SUNSET  
APRIL 19 2024.........SUNRISE 612 AM PDT SUNSET 805 PM PDT  
APRIL 20 2024.........SUNRISE 610 AM PDT SUNSET 807 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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