543
CDUS46 KSEW 040118
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
618 PM PDT WED SEP 03 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 3 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 84 MM 92 1988 75 9 72
MINIMUM 59 MM 45 1956 56 3 59
AVERAGE 72 65 7 66
PRECIPITATION (IN)
TODAY 0.00 0.91 1945 0.04 -0.04 0.00
MONTH TO DATE 0.00 0.12 -0.12 T
SINCE OCT 1 28.91 37.85 -8.94 35.31
SINCE JAN 1 15.51 21.91 -6.40 18.16
SNOWFALL (IN)
TODAY 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 MM
DEGREE DAYS
HEATING
TODAY 0 2 -2 0
MONTH TO DATE 0 6 -6 0
SINCE SEP 1 0 6 -6 0
SINCE JUL 1 24 61 -37 38
COOLING
TODAY 7 2 5 1
MONTH TO DATE 11 6 5 8
SINCE SEP 1 11 6 5 8
SINCE JAN 1 305 239 66 281
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION N (350)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (99)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 400 AM
LOWEST 46 400 PM
AVERAGE 70
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 88 2017
MINIMUM TEMPERATURE (F) 56 42 1952
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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