CDUS46 KSEW 190826 CLISEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE 126 AM PDT TUE AUG 19 2025 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 18 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 75 345 PM 88 1991 78 -3 78 MINIMUM 58 534 AM 47 1951 57 1 60 AVERAGE 67 67 0 69 PRECIPITATION (IN) YESTERDAY 0.00 1.63 1975 0.04 -0.04 T MONTH TO DATE 1.14 0.48 0.66 0.47 SINCE OCT 1 28.91 37.24 -8.33 34.12 SINCE JAN 1 15.51 21.30 -5.79 16.97 SNOWFALL (IN) YESTERDAY 0.0 MM MM 0.0 MONTH TO DATE 0.0 0.0 SINCE OCT 1 2.3 0.3 SINCE JUL 1 0.0 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 0 1 -1 0 MONTH TO DATE 2 11 -9 2 SINCE JUN 1 117 160 -43 141 SINCE JUL 1 23 42 -19 9 COOLING YESTERDAY 2 3 -1 4 MONTH TO DATE 61 67 -6 67 SINCE JUN 1 222 192 30 250 SINCE JAN 1 225 202 23 257 ................................................................... WIND (MPH) RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (210) HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (260) HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (230) AVERAGE WIND SPEED 6.0 SKY COVER AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 83 700 AM LOWEST 37 1200 PM AVERAGE 60 .......................................................... THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 77 95 2016 MINIMUM TEMPERATURE (F) 57 47 19451947 SUNRISE AND SUNSET AUGUST 19 2025........SUNRISE 611 AM PDT SUNSET 813 PM PDT AUGUST 20 2025........SUNRISE 613 AM PDT SUNSET 811 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$