163
CDUS46 KSEW 030826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT WED SEP 03 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 2 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 79 416 PM 98 1988 75 4 70
MINIMUM 58 359 AM 41 1960 56 2 59
AVERAGE 69 66 3 65
PRECIPITATION (IN)
YESTERDAY 0.00 0.71 1979 0.04 -0.04 T
MONTH TO DATE 0.00 0.08 -0.08 T
SINCE OCT 1 28.91 37.81 -8.90 35.31
SINCE JAN 1 15.51 21.87 -6.36 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 2 -2 0
MONTH TO DATE 0 4 -4 0
SINCE SEP 1 0 4 -4 0
SINCE JUL 1 24 59 -35 38
COOLING
YESTERDAY 4 2 2 0
MONTH TO DATE 4 4 0 7
SINCE SEP 1 4 4 0 7
SINCE JAN 1 298 237 61 280
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WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION N (340)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 6.1
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 300 AM
LOWEST 52 500 PM
AVERAGE 75
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 92 1988
MINIMUM TEMPERATURE (F) 56 45 1956
SUNRISE AND SUNSET
SEPTEMBER 3 2025.....SUNRISE 631 AM PDT SUNSET 745 PM PDT
SEPTEMBER 4 2025.....SUNRISE 633 AM PDT SUNSET 743 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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