CDUS46 KSEW 120927 CLISEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE 127 AM PST FRI DEC 12 2025 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 11 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 55 1230 AM 58 2014 47 8 52 MINIMUM 45 1018 PM 21 2009 37 8 36 AVERAGE 50 42 8 44 PRECIPITATION (IN) YESTERDAY 0.46 1.42 2010 0.18 0.28 0.00 MONTH TO DATE 4.44 2.07 2.37 0.59 SINCE OCT 1 13.85 12.29 1.56 8.49 SINCE JAN 1 30.12 35.69 -5.57 27.27 SNOWFALL (IN) YESTERDAY 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 YESTERDAY 15 23 -8 21 MONTH TO DATE 182 246 -64 268 SINCE DEC 1 182 246 -64 268 SINCE JUL 1 1096 1307 -211 1309 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 ................................................................... WIND (MPH) RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION E (100) HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (190) HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION S (200) AVERAGE WIND SPEED 6.6 SKY COVER AVERAGE SKY COVER 1.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 700 PM LOWEST 68 100 PM AVERAGE 84 .......................................................... THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 47 60 1960 1995 MINIMUM TEMPERATURE (F) 37 22 1972 SUNRISE AND SUNSET DECEMBER 12 2025......SUNRISE 748 AM PST SUNSET 418 PM PST DECEMBER 13 2025......SUNRISE 749 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. $$