367
CDUS46 KSEW 090927
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PST TUE DEC 09 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 8 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 56 333 PM 60 2015 48 8 47
MINIMUM 47 1159 PM 13 1972 37 10 42
AVERAGE 52 42 10 45
PRECIPITATION (IN)
YESTERDAY 1.15 2.13 2015 0.19 0.96 0.04
MONTH TO DATE 2.15 1.52 0.63 0.59
SINCE OCT 1 11.56 11.74 -0.18 8.49
SINCE JAN 1 27.83 35.14 -7.31 27.27
SNOWFALL (IN)
YESTERDAY 0.0 2.2 1971 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 13 23 -10 20
MONTH TO DATE 142 177 -35 197
SINCE DEC 1 142 177 -35 197
SINCE JUL 1 1056 1238 -182 1238
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 13 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 15.4
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1100 AM
LOWEST 89 300 AM
AVERAGE 93
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 61 2014
MINIMUM TEMPERATURE (F) 37 18 2009
SUNRISE AND SUNSET
DECEMBER 9 2025......SUNRISE 745 AM PST SUNSET 418 PM PST
DECEMBER 10 2025......SUNRISE 746 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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