227  
CDUS46 KSEW 200827  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
127 AM PDT SAT JUL 20 2024  
   
...............................  
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JULY 19 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 84 438 PM 95 1988 78 6 89  
2015  
MINIMUM 57 523 AM 48 1962 57 0 61  
AVERAGE 71 68 3 75  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.45 1993 0.01 -0.01 0.00  
MONTH TO DATE 0.00 0.40 -0.40 0.00  
SINCE OCT 1 33.28 36.56 -3.28 28.91  
SINCE JAN 1 16.13 20.62 -4.49 14.02  
 
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 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 2 25 -23 2  
SINCE JUN 1 134 143 -9 114  
SINCE JUL 1 2 25 -23 2  
 
COOLING  
YESTERDAY 6 4 2 10  
MONTH TO DATE 136 48 88 83  
SINCE JUN 1 155 77 78 112  
SINCE JAN 1 162 87 75 147    
...............................................................  
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION W (270)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 600 AM  
LOWEST 27 400 PM  
AVERAGE 57  
   
......................................................  
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 100 1994  
MINIMUM TEMPERATURE (F) 57 50 1953  
1955  
1962  
 
SUNRISE AND SUNSET  
JULY 20 2024..........SUNRISE 534 AM PDT SUNSET 857 PM PDT  
JULY 21 2024..........SUNRISE 535 AM PDT SUNSET 856 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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