516
CDUS46 KSEW 080826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT MON SEP 08 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 7 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 70 444 PM 94 1981 74 -4 77
MINIMUM 58 406 AM 45 1960 55 3 63
1992
AVERAGE 64 65 -1 70
PRECIPITATION (IN)
YESTERDAY 0.02 0.59 2019 0.04 -0.02 0.00
MONTH TO DATE 0.05 0.30 -0.25 T
SINCE OCT 1 28.96 38.03 -9.07 35.31
SINCE JAN 1 15.56 22.09 -6.53 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 1 2 -1 0
MONTH TO DATE 1 14 -13 0
SINCE SEP 1 1 14 -13 0
SINCE JUL 1 25 69 -44 38
COOLING
YESTERDAY 0 2 -2 5
MONTH TO DATE 19 14 5 35
SINCE SEP 1 19 14 5 35
SINCE JAN 1 313 247 66 308
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (190)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 6.0
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1200 AM
LOWEST 63 300 PM
AVERAGE 78
......................................................
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 2025.....SUNRISE 638 AM PDT SUNSET 735 PM PDT
SEPTEMBER 9 2025.....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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