271
CDUS46 KSEW 220216
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PST SUN DEC 21 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 21 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 48 1225 PM 59 2020 46 2 58
MINIMUM 42 740 AM 12 1990 37 5 44
AVERAGE 45 42 3 51
PRECIPITATION (IN)
TODAY 0.14 1.64 2020 0.19 -0.05 0.31
MONTH TO DATE 7.77 3.87 3.90 3.22
SINCE OCT 1 17.18 14.09 3.09 11.12
SINCE JAN 1 33.45 37.49 -4.04 29.90
SNOWFALL (IN)
TODAY 0.0 3.0 2008 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 20 24 -4 14
MONTH TO DATE 358 477 -119 448
SINCE DEC 1 358 477 -119 448
SINCE JUL 1 1272 1538 -266 1489
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 8 RESULTANT WIND DIRECTION S (170)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 8.5
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 400 PM
LOWEST 71 1200 PM
AVERAGE 81
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 57 2005
MINIMUM TEMPERATURE (F) 37 14 1983
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 754 AM PST SUNSET 421 PM PST
DECEMBER 22 2025......SUNRISE 755 AM PST SUNSET 422 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