677
CDUS46 KSEW 040117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT THU SEP 03 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 3 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 68 353 PM 92 1988 75 -7 84
MINIMUM 53 527 AM 45 1956 56 -3 59
AVERAGE 61 65 -4 72
PRECIPITATION (IN)
TODAY 0.09 0.91 1945 0.04 0.05 0.00
MONTH TO DATE 0.32 0.12 0.20 0.00
SINCE OCT 1 37.23 37.85 -0.62 28.91
SINCE JAN 1 20.45 21.91 -1.46 15.51
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 4 2 2 0
MONTH TO DATE 9 6 3 0
SINCE SEP 1 9 6 3 0
SINCE JUL 1 34 61 -27 24
COOLING
TODAY 0 2 -2 7
MONTH TO DATE 0 6 -6 11
SINCE SEP 1 0 6 -6 11
SINCE JAN 1 265 239 26 305
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WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (170)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 7.5
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 500 AM
LOWEST 45 400 PM
AVERAGE 66
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 88 2017
MINIMUM TEMPERATURE (F) 56 42 1952
SUNRISE AND SUNSET
SEPTEMBER 3 2026.....SUNRISE 631 AM PDT SUNSET 745 PM PDT
SEPTEMBER 4 2026.....SUNRISE 632 AM PDT SUNSET 743 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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