010
CDUS46 KSEW 080828
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PDT TUE SEP 08 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 7 2026...
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)
YESTERDAY
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)
YESTERDAY 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)
YESTERDAY 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
YESTERDAY 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
YESTERDAY 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
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WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 6.9
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 100 AM
LOWEST 55 400 PM
AVERAGE 71
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 85 1993
2011
MINIMUM TEMPERATURE (F) 55 43 1950
SUNRISE AND SUNSET
SEPTEMBER 8 2026.....SUNRISE 638 AM PDT SUNSET 735 PM PDT
SEPTEMBER 9 2026.....SUNRISE 639 AM PDT SUNSET 733 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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