838
CDUS46 KSEW 080118
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
618 PM PDT SUN SEP 07 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 7 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
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)
TODAY 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)
TODAY 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
TODAY 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
TODAY 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 6 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 6.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 1200 AM
LOWEST 63 300 PM
AVERAGE 78
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 85 1993
2011
MINIMUM TEMPERATURE (F) 55 43 1950
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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