752  
CDUS46 KSEW 180117  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
617 PM PDT WED AUG 17 2022  
   
...............................
 
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 17 2022...  
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2022  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 90 306 PM 96 1977 78 12 68  
MINIMUM 63 502 AM 45 1951 57 6 53  
AVERAGE 77 68 9 61  
 
PRECIPITATION (IN)  
TODAY 0.00 0.93 1995 0.03 -0.03 T  
MONTH TO DATE 0.03 0.44 -0.41 0.08  
SINCE OCT 1 45.21 37.20 8.01 34.99  
SINCE JAN 1 25.11 21.26 3.85 20.18  
 
SNOWFALL (IN)  
TODAY MM MM MM 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 9.2 12.9  
SINCE JUL 1 0.0 0.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 0 1 -1 4  
MONTH TO DATE 2 10 -8 4  
SINCE JUN 1 159 159 0 101  
SINCE JUL 1 19 41 -22 13  
 
COOLING  
TODAY 12 3 9 0  
MONTH TO DATE 81 64 17 110  
SINCE JUN 1 258 189 69 346  
SINCE JAN 1 258 199 59 348    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION N (10)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 7.9  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 600 AM  
LOWEST 34 400 PM  
AVERAGE 55  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 88 1991  
MINIMUM TEMPERATURE (F) 57 47 1951  
 
SUNRISE AND SUNSET  
AUGUST 17 2022........SUNRISE 608 AM PDT SUNSET 817 PM PDT  
AUGUST 18 2022........SUNRISE 610 AM PDT SUNSET 815 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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