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. $$