502
CDUS46 KSEW 180116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT MON AUG 17 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 17 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 80 359 PM 96 1977 78 2 74
MINIMUM 43R 949 AM 45 1951 57 -14 60
AVERAGE 62 68 -6 67
PRECIPITATION (IN)
TODAY 0.00 0.93 1995 0.03 -0.03 0.00
MONTH TO DATE T 0.44 -0.44 1.14
SINCE OCT 1 36.35 37.20 -0.85 28.91
SINCE JAN 1 19.57 21.26 -1.69 15.51
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 3.0 2.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 3 1 2 0
MONTH TO DATE 4 10 -6 2
SINCE JUN 1 119 159 -40 117
SINCE JUL 1 24 41 -17 23
COOLING
TODAY 0 3 -3 2
MONTH TO DATE 52 64 -12 59
SINCE JUN 1 210 189 21 220
SINCE JAN 1 220 199 21 223
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 4.3
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 400 AM
LOWEST 47 400 PM
AVERAGE 74
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 88 1991
MINIMUM TEMPERATURE (F) 57 47 1951
SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE 608 AM PDT SUNSET 817 PM PDT
AUGUST 18 2026........SUNRISE 610 AM PDT SUNSET 815 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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