221  
CDUS46 KSEW 070117  
CLISEA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SEATTLE WA  
617 PM PDT MON APR 6 2020  
 
   
...............................
 
 
   
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 6 2020
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1945 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 60 321 PM 78 2007 57 3 57  
MINIMUM 39 505 AM 31 1956 41 -2 45  
AVERAGE 50 49 1 51  
 
PRECIPITATION (IN)  
TODAY 0.00 0.63 1963 0.10 -0.10 0.26  
MONTH TO DATE 0.01 0.64 -0.63 0.67  
SINCE OCT 1 29.80 28.83 0.97 25.77  
SINCE JAN 1 16.46 13.43 3.03 10.49  
 
SNOWFALL (IN)  
TODAY 0.0 T 1991 0.0  
MONTH TO DATE 0.0 0.0  
SINCE OCT 1 0.7 21.0  
SINCE JUL 1 0.7 21.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 15 16 -1 14  
MONTH TO DATE 110 97 13 62  
SINCE MAR 1 728 671 57 574  
SINCE JUL 1 3660 3925 -265 3552  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 6  
SINCE JAN 1 0 0 0 6    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION N (340)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 4.4  
 
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 79 500 AM  
LOWEST 36 300 PM  
AVERAGE 58  
   
......................................................
 
 
 
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 78 2016  
1996  
MINIMUM TEMPERATURE (F) 41 29 1952  
 
 
SUNRISE AND SUNSET  
APRIL 6 2020.........SUNRISE 637 AM PDT SUNSET 747 PM PDT  
APRIL 7 2020.........SUNRISE 635 AM PDT SUNSET 748 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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