907
CDUS46 KSEW 010831
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
131 AM PDT WED OCT 01 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 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 70 109 PM 82 1992 67 3 67
MINIMUM 52 623 AM 36 1950 51 1 48
AVERAGE 61 59 2 58
PRECIPITATION (IN)
YESTERDAY 0.06 1.65 1953 0.08 -0.02 0.00
MONTH TO DATE 0.76 1.61 -0.85 0.62
SINCE OCT 1 29.67 39.34 -9.67 35.93
SINCE JAN 1 16.27 23.40 -7.13 18.78
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 4 6 -2 7
MONTH TO DATE 51 103 -52 106
SINCE SEP 1 51 103 -52 106
SINCE JUL 1 75 158 -83 144
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 34 30 4 42
SINCE SEP 1 34 30 4 42
SINCE JAN 1 328 263 65 315
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WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (170)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 7.0
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 600 AM
LOWEST 38 400 PM
AVERAGE 68
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 89 1987
MINIMUM TEMPERATURE (F) 51 35 1950
SUNRISE AND SUNSET
OCTOBER 1 2025.......SUNRISE 709 AM PDT SUNSET 648 PM PDT
OCTOBER 2 2025.......SUNRISE 710 AM PDT SUNSET 646 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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