805  
CDUS46 KSEW 130828  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
128 AM PDT MON MAY 13 2024  
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 12 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 75 505 PM 82 2023 66 9 82  
MINIMUM 51 459 AM 38 1964 48 3 52  
1985  
2011  
AVERAGE 63 57 6 67  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.71 1996 0.06 -0.06 0.00  
MONTH TO DATE 0.28 0.80 -0.52 0.79  
SINCE OCT 1 30.83 33.63 -2.80 27.55  
SINCE JAN 1 13.68 17.69 -4.01 12.66  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 0.3 8.1  
SINCE JUL 1 0.3 8.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 2 8 -6 0  
MONTH TO DATE 113 114 -1 92  
SINCE MAR 1 1082 1083 -1 1170  
SINCE JUL 1 3972 4130 -158 4257  
 
COOLING  
YESTERDAY 0 0 0 2  
MONTH TO DATE 7 0 7 2  
SINCE MAR 1 7 1 6 2  
SINCE JAN 1 7 1 6 2    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION N (10)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 7.6  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 500 AM  
LOWEST 33 500 PM  
AVERAGE 58  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 86 2023  
MINIMUM TEMPERATURE (F) 48 37 1956  
 
SUNRISE AND SUNSET  
MAY 13 2024...........SUNRISE 534 AM PDT SUNSET 838 PM PDT  
MAY 14 2024...........SUNRISE 533 AM PDT SUNSET 839 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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