990
CDUS46 KSEW 120221
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
621 PM PST THU DEC 11 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 11 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 55 1230 AM 58 2014 47 8 52
MINIMUM 46 459 PM 21 2009 37 9 36
AVERAGE 51 42 9 44
PRECIPITATION (IN)
TODAY 0.44 1.42 2010 0.18 0.26 0.00
MONTH TO DATE 4.42 2.07 2.35 0.59
SINCE OCT 1 13.83 12.29 1.54 8.49
SINCE JAN 1 30.10 35.69 -5.59 27.27
SNOWFALL (IN)
TODAY 0.0 4.2 1972 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 14 23 -9 21
MONTH TO DATE 181 246 -65 268
SINCE DEC 1 181 246 -65 268
SINCE JUL 1 1095 1307 -212 1309
COOLING
TODAY 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
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION E (90)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 9.3
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 1200 AM
LOWEST 68 100 PM
AVERAGE 82
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 60 1960
1995
MINIMUM TEMPERATURE (F) 37 22 1972
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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