939
CDUS46 KSEW 170834
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
134 AM PDT FRI OCT 17 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 16 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 58 119 PM 88 2022 60 -2 61
MINIMUM 42 629 AM 32 1946 47 -5 47
AVERAGE 50 54 -4 54
PRECIPITATION (IN)
YESTERDAY T 0.94 1947 0.12 -0.12 0.04
MONTH TO DATE 0.60 1.62 -1.02 0.87
SINCE OCT 1 0.60 1.62 -1.02 0.87
SINCE JAN 1 16.87 25.02 -8.15 19.65
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 15 11 4 11
MONTH TO DATE 150 145 5 130
SINCE SEP 1 201 247 -46 236
SINCE JUL 1 225 302 -77 274
COOLING
YESTERDAY 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
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WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (170)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 6.7
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 900 PM
LOWEST 59 1000 AM
AVERAGE 73
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 74 1989
MINIMUM TEMPERATURE (F) 47 34 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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