309  
CDUS46 KSEW 140117  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE  
617 PM PDT FRI OCT 13 2023  
   
...............................
 
 
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 13 2023...  
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1945 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 73 150 PM 75 1961 61 12 75  
2022  
MINIMUM 50 319 AM 35 1954 48 2 48  
AVERAGE 62 54 8 62  
 
PRECIPITATION (IN)  
TODAY 0.00 1.75 2016 0.11 -0.11 0.00  
MONTH TO DATE 1.29 1.26 0.03 0.01  
SINCE OCT 1 1.29 1.26 0.03 0.01  
SINCE JAN 1 19.11 24.66 -5.55 25.39  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 0.0 0.0  
SINCE JUL 1 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 3 10 -7 3  
MONTH TO DATE 75 112 -37 36  
SINCE SEP 1 183 214 -31 71  
SINCE JUL 1 195 269 -74 91  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 5  
SINCE SEP 1 26 30 -4 42  
SINCE JAN 1 378 263 115 386    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SE (120)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 9.3  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74 300 AM  
LOWEST 34 100 PM  
AVERAGE 54  
   
......................................................
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 80 1961  
MINIMUM TEMPERATURE (F) 47 36 1949  
 
SUNRISE AND SUNSET  
OCTOBER 13 2023.......SUNRISE 725 AM PDT SUNSET 625 PM PDT  
OCTOBER 14 2023.......SUNRISE 726 AM PDT SUNSET 623 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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