258
CDUS46 KSEW 120116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT TUE AUG 11 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 11 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 79 434 PM 96 2014 78 1 87
MINIMUM 55 559 AM 46 1954 58 -3 69
AVERAGE 67 68 -1 78
PRECIPITATION (IN)
TODAY 0.00 0.32 2009 0.03 -0.03 0.00
MONTH TO DATE T 0.26 -0.26 0.16
SINCE OCT 1 36.35 37.02 -0.67 27.93
SINCE JAN 1 19.57 21.08 -1.51 14.53
SNOWFALL (IN)
TODAY MM 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 0 1 -1 0
MONTH TO DATE 1 4 -3 2
SINCE JUN 1 116 153 -37 117
SINCE JUL 1 21 35 -14 23
COOLING
TODAY 2 4 -2 13
MONTH TO DATE 39 44 -5 35
SINCE JUN 1 197 169 28 196
SINCE JAN 1 207 179 28 199
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 4.9
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 500 AM
LOWEST 40 400 PM
AVERAGE 68
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 96 1977
MINIMUM TEMPERATURE (F) 58 49 1949
1950
1953
SUNRISE AND SUNSET
AUGUST 11 2026........SUNRISE 600 AM PDT SUNSET 827 PM PDT
AUGUST 12 2026........SUNRISE 602 AM PDT SUNSET 826 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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