596
CDUS46 KSEW 110928
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PST THU DEC 11 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 10 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 57 446 PM 66 2014 47 10 44
MINIMUM 53 1230 AM 16 2009 37 16 32
AVERAGE 55 42 13 38
PRECIPITATION (IN)
YESTERDAY 1.60R 1.55 1977 0.19 1.41 0.00
MONTH TO DATE 3.98 1.89 2.09 0.59
SINCE OCT 1 13.39 12.11 1.28 8.49
SINCE JAN 1 29.66 35.51 -5.85 27.27
SNOWFALL (IN)
YESTERDAY 0.0 2.8 1992 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 10 23 -13 27
MONTH TO DATE 167 223 -56 247
SINCE DEC 1 167 223 -56 247
SINCE JUL 1 1081 1284 -203 1288
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 328 263 65 315
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WIND (MPH)
RESULTANT WIND SPEED 18 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 18.4
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 100 PM
LOWEST 89 200 PM
AVERAGE 93
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 58 2014
MINIMUM TEMPERATURE (F) 37 21 2009
SUNRISE AND SUNSET
DECEMBER 11 2025......SUNRISE 747 AM PST SUNSET 418 PM PST
DECEMBER 12 2025......SUNRISE 748 AM PST SUNSET 418 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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