123
CDUS46 KSEW 300827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT SAT AUG 30 2025
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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 29 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 73 518 PM 91 1974 76 -3 79
MINIMUM 58 1159 PM 44 1951 56 2 53
AVERAGE 66 66 0 66
PRECIPITATION (IN)
YESTERDAY 0.00 1.28 2015 0.04 -0.04 0.00
MONTH TO DATE 1.14 0.89 0.25 1.66
SINCE OCT 1 28.91 37.65 -8.74 35.31
SINCE JAN 1 15.51 21.71 -6.20 18.16
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 22 -20 31
SINCE JUN 1 117 171 -54 170
SINCE JUL 1 23 53 -30 38
COOLING
YESTERDAY 1 2 -1 1
MONTH TO DATE 129 94 35 70
SINCE JUN 1 290 219 71 253
SINCE JAN 1 293 229 64 260
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 5.3
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 700 AM
LOWEST 66 300 PM
AVERAGE 78
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 90 2022
MINIMUM TEMPERATURE (F) 56 45 1950
SUNRISE AND SUNSET
AUGUST 30 2025........SUNRISE 626 AM PDT SUNSET 752 PM PDT
AUGUST 31 2025........SUNRISE 627 AM PDT SUNSET 750 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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