590 CDUS46 KSEW 210828 CLISEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE WA 128 AM PDT WED AUG 21 2019 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 20 2019... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1945 TO 2019 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 82 311 PM 91 2016 76 6 81 MINIMUM 56 339 AM 45 1945 56 0 57 AVERAGE 69 66 3 69 PRECIPITATION (IN) YESTERDAY 0.00 0.70 2008 0.03 -0.03 0.00 MONTH TO DATE 0.75 0.49 0.26 0.08 SINCE OCT 1 32.05 35.60 -3.55 38.15 SINCE JAN 1 16.77 20.20 -3.43 19.29 DEGREE DAYS HEATING YESTERDAY 0 1 -1 0 MONTH TO DATE 0 20 -20 2 SINCE JUN 1 84 213 -129 113 SINCE JUL 1 11 69 -58 11 COOLING YESTERDAY 4 2 2 4 MONTH TO DATE 95 54 41 107 SINCE JUN 1 228 146 82 336 SINCE JAN 1 249 152 97 353 .................................................................. WIND (MPH) RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION S (190) HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (230) HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION W (250) AVERAGE WIND SPEED 6.1 SKY COVER AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 78 600 AM LOWEST 42 300 PM AVERAGE 60 .......................................................... THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 76 91 2018 MINIMUM TEMPERATURE (F) 56 44 1947 SUNRISE AND SUNSET AUGUST 21 2019........SUNRISE 613 AM PDT SUNSET 811 PM PDT AUGUST 22 2019........SUNRISE 615 AM PDT SUNSET 809 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$