774
CDUS46 KSEW 280826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT FRI AUG 28 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 27 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 74 342 PM 88 1986 76 -2 75
1994
2009
MINIMUM 59 1148 PM 44 1952 56 3 61
AVERAGE 67 66 1 68
PRECIPITATION (IN)
YESTERDAY 0.00 0.76 1951 0.04 -0.04 T
MONTH TO DATE T 0.81 -0.81 1.14
SINCE OCT 1 36.35 37.57 -1.22 28.91
SINCE JAN 1 19.57 21.63 -2.06 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 1 20 -19 2
SINCE JUN 1 116 169 -53 117
SINCE JUL 1 21 51 -30 23
COOLING
YESTERDAY 2 2 0 3
MONTH TO DATE 97 90 7 122
SINCE JUN 1 255 215 40 283
SINCE JAN 1 265 225 40 286
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WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 9.4
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 500 AM
LOWEST 51 300 PM
AVERAGE 67
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 95 1967
MINIMUM TEMPERATURE (F) 56 46 1952
SUNRISE AND SUNSET
AUGUST 28 2026........SUNRISE 623 AM PDT SUNSET 757 PM PDT
AUGUST 29 2026........SUNRISE 624 AM PDT SUNSET 755 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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