191
CDUS46 KSEW 050157
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
657 PM PDT FRI SEP 04 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 4 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 70 340 PM 88 2017 75 -5 79
MINIMUM 53 530 AM 42 1952 56 -3 58
AVERAGE 62 65 -3 69
PRECIPITATION (IN)
TODAY T 0.97 1945 0.05 -0.05 0.00
MONTH TO DATE 0.35 0.17 0.18 0.00
SINCE OCT 1 37.26 37.90 -0.64 28.91
SINCE JAN 1 20.48 21.96 -1.48 15.51
SNOWFALL (IN)
TODAY 0.0 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 0
DEGREE DAYS
HEATING
TODAY 3 2 1 0
MONTH TO DATE 12 8 4 0
SINCE SEP 1 12 8 4 0
SINCE JUL 1 37 63 -26 24
COOLING
TODAY 0 2 -2 4
MONTH TO DATE 0 8 -8 15
SINCE SEP 1 0 8 -8 15
SINCE JAN 1 265 241 24 309
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION W (280)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 2.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 400 AM
LOWEST 57 100 PM
AVERAGE 77
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 90 2024
MINIMUM TEMPERATURE (F) 55 42 1947
SUNRISE AND SUNSET
SEPTEMBER 4 2026.....SUNRISE 632 AM PDT SUNSET 743 PM PDT
SEPTEMBER 5 2026.....SUNRISE 634 AM PDT SUNSET 741 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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