101
CDUS46 KSEW 070831
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
131 AM PDT SUN SEP 07 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 6 2025...
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)
YESTERDAY
MAXIMUM 73 339 PM 90 2014 74 -1 88
MINIMUM 58 705 AM 44 1947 55 3 61
AVERAGE 66 65 1 75
PRECIPITATION (IN)
YESTERDAY 0.03 0.93 2009 0.05 -0.02 0.00
MONTH TO DATE 0.03 0.26 -0.23 T
SINCE OCT 1 28.94 37.99 -9.05 35.31
SINCE JAN 1 15.54 22.05 -6.51 18.16
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 0 2 -2 0
MONTH TO DATE 0 12 -12 0
SINCE SEP 1 0 12 -12 0
SINCE JUL 1 24 67 -43 38
COOLING
YESTERDAY 1 2 -1 10
MONTH TO DATE 19 12 7 30
SINCE SEP 1 19 12 7 30
SINCE JAN 1 313 245 68 303
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 400 AM
LOWEST 64 500 PM
AVERAGE 81
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 94 1981
MINIMUM TEMPERATURE (F) 55 45 1960
1992
SUNRISE AND SUNSET
SEPTEMBER 7 2025.....SUNRISE 637 AM PDT SUNSET 737 PM PDT
SEPTEMBER 8 2025.....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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