613
CDUS46 KSEW 150117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT SUN SEP 14 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 14 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 68 157 PM 93 1979 72 -4 66
MINIMUM 59 949 AM 46 1947 54 5 56
1955
1986
AVERAGE 64 63 1 61
PRECIPITATION (IN)
TODAY T 0.73 1949 0.05 -0.05 0.09
MONTH TO DATE 0.06 0.64 -0.58 0.37
SINCE OCT 1 28.97 38.37 -9.40 35.68
SINCE JAN 1 15.57 22.43 -6.86 18.53
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 2.3 0.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 1 3 -2 4
MONTH TO DATE 6 30 -24 23
SINCE SEP 1 6 30 -24 23
SINCE JUL 1 30 85 -55 61
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 22 23 -1 37
SINCE SEP 1 22 23 -1 37
SINCE JAN 1 316 256 60 310
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 11.3
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 900 AM
LOWEST 55 200 PM
AVERAGE 69
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 93 1967
MINIMUM TEMPERATURE (F) 54 42 1952
SUNRISE AND SUNSET
SEPTEMBER 14 2025.....SUNRISE 646 AM PDT SUNSET 722 PM PDT
SEPTEMBER 15 2025.....SUNRISE 647 AM PDT SUNSET 720 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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