Climatological Report (Daily)
Issued by NWS
Issued by NWS
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694
CDUS46 KSEW 270831
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
131 AM PDT SAT SEP 27 2025
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 26 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 70 400 PM 82 2022 68 2 68
MINIMUM 50 438 AM 39 1972 52 -2 51
AVERAGE 60 60 0 60
PRECIPITATION (IN)
YESTERDAY 0.00 1.51 1948 0.07 -0.07 0.08
MONTH TO DATE 0.49 1.32 -0.83 0.59
SINCE OCT 1 29.40 39.05 -9.65 35.90
SINCE JAN 1 16.00 23.11 -7.11 18.75
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 5 5 0 5
MONTH TO DATE 38 79 -41 75
SINCE SEP 1 38 79 -41 75
SINCE JUL 1 62 134 -72 113
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
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (170)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 6.9
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 500 AM
LOWEST 42 400 PM
AVERAGE 66
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 89 1967
MINIMUM TEMPERATURE (F) 51 35 1972
SUNRISE AND SUNSET
SEPTEMBER 27 2025.....SUNRISE 703 AM PDT SUNSET 656 PM PDT
SEPTEMBER 28 2025.....SUNRISE 705 AM PDT SUNSET 654 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$