700
CDUS46 KSEW 100232
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
632 PM PST TUE DEC 09 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 9 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 51 222 PM 61 2014 47 4 48
MINIMUM 47 914 AM 18 2009 37 10 36
AVERAGE 49 42 7 42
PRECIPITATION (IN)
TODAY 0.01 1.78 1956 0.18 -0.17 0.00
MONTH TO DATE 2.16 1.70 0.46 0.59
SINCE OCT 1 11.57 11.92 -0.35 8.49
SINCE JAN 1 27.84 35.32 -7.48 27.27
SNOWFALL (IN)
TODAY 0.0 T 1978 0.0
2016
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 16 23 -7 23
MONTH TO DATE 158 200 -42 220
SINCE DEC 1 158 200 -42 220
SINCE JUL 1 1072 1261 -189 1261
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 6 RESULTANT WIND DIRECTION S (160)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 8.7
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 300 AM
LOWEST 68 200 PM
AVERAGE 81
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 66 2014
MINIMUM TEMPERATURE (F) 37 16 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page