352
CDUS46 KSEW 180117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT FRI OCT 17 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 17 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 60 259 PM 74 1989 60 0 55
MINIMUM 52 843 AM 34 1949 47 5 45
AVERAGE 56 53 3 50
PRECIPITATION (IN)
TODAY T 1.24 2009 0.13 -0.13 0.05
MONTH TO DATE 0.60 1.75 -1.15 0.92
SINCE OCT 1 0.60 1.75 -1.15 0.92
SINCE JAN 1 16.87 25.15 -8.28 19.70
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 9 12 -3 15
MONTH TO DATE 159 157 2 145
SINCE SEP 1 210 259 -49 251
SINCE JUL 1 234 314 -80 289
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 34 30 4 42
SINCE JAN 1 328 263 65 315
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (170)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 600 AM
LOWEST 51 300 PM
AVERAGE 72
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 71 2023
MINIMUM TEMPERATURE (F) 47 32 1949
SUNRISE AND SUNSET
OCTOBER 17 2025.......SUNRISE 731 AM PDT SUNSET 617 PM PDT
OCTOBER 18 2025.......SUNRISE 733 AM PDT SUNSET 615 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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