624
CDUS46 KSEW 080135
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
635 PM PDT MON SEP 07 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 7 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 70 421 PM 94 1981 74 -4 70
MINIMUM 57 132 AM 45 1960 55 2 58
1992
AVERAGE 64 65 -1 64
PRECIPITATION (IN)
TODAY 0.00 0.59 2019 0.04 -0.04 0.02
MONTH TO DATE 0.35 0.30 0.05 0.05
SINCE OCT 1 37.26 38.03 -0.77 28.96
SINCE JAN 1 20.48 22.09 -1.61 15.56
SNOWFALL (IN)
TODAY MM MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 3.0 2.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 1 2 -1 1
MONTH TO DATE 18 14 4 1
SINCE SEP 1 18 14 4 1
SINCE JUL 1 43 69 -26 25
COOLING
TODAY 0 2 -2 0
MONTH TO DATE 0 14 -14 19
SINCE SEP 1 0 14 -14 19
SINCE JAN 1 265 247 18 313
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (190)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 7.0
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 100 AM
LOWEST 55 400 PM
AVERAGE 71
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 85 1993
2011
MINIMUM TEMPERATURE (F) 55 43 1950
SUNRISE AND SUNSET
SEPTEMBER 7 2026.....SUNRISE 636 AM PDT SUNSET 737 PM PDT
SEPTEMBER 8 2026.....SUNRISE 638 AM PDT SUNSET 735 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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