113
CDUS46 KSEW 010827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT TUE SEP 01 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 31 2026...
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)
YESTERDAY
MAXIMUM 76 427 PM 92 1987 76 0 76
MINIMUM 54 541 AM 46 1950 56 -2 56
AVERAGE 65 66 -1 66
PRECIPITATION (IN)
YESTERDAY 0.00 0.56 1961 0.04 -0.04 0.00
MONTH TO DATE 0.56 0.97 -0.41 1.14
SINCE OCT 1 36.91 37.73 -0.82 28.91
SINCE JAN 1 20.13 21.79 -1.66 15.51
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 0 1 -1 0
MONTH TO DATE 5 24 -19 3
SINCE JUN 1 120 173 -53 118
SINCE JUL 1 25 55 -30 24
COOLING
YESTERDAY 0 2 -2 1
MONTH TO DATE 97 98 -1 130
SINCE JUN 1 255 223 32 291
SINCE JAN 1 265 233 32 294
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WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION N (360)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 8.6
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 400 AM
LOWEST 40 300 PM
AVERAGE 65
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 91 1987
MINIMUM TEMPERATURE (F) 56 46 1973
SUNRISE AND SUNSET
SEPTEMBER 1 2026.....SUNRISE 628 AM PDT SUNSET 749 PM PDT
SEPTEMBER 2 2026.....SUNRISE 630 AM PDT SUNSET 747 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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