242
CDUS46 KSEW 110118
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
618 PM PDT THU SEP 10 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 10 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 71 139 PM 92 2022 74 -3 75
MINIMUM 57 552 AM 39 1952 55 2 55
AVERAGE 64 64 0 65
PRECIPITATION (IN)
TODAY 0.00 0.64 2004 0.05 -0.05 0.00
MONTH TO DATE 0.35 0.44 -0.09 0.05
SINCE OCT 1 37.26 38.17 -0.91 28.96
SINCE JAN 1 20.48 22.23 -1.75 15.56
SNOWFALL (IN)
TODAY 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
TODAY 1 2 -1 0
MONTH TO DATE 19 20 -1 2
SINCE SEP 1 19 20 -1 2
SINCE JUL 1 44 75 -31 26
COOLING
TODAY 0 1 -1 0
MONTH TO DATE 1 19 -18 21
SINCE SEP 1 1 19 -18 21
SINCE JAN 1 266 252 14 315
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION N (360)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 500 AM
LOWEST 55 200 PM
AVERAGE 71
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 93 2013
MINIMUM TEMPERATURE (F) 55 40 1952
SUNRISE AND SUNSET
SEPTEMBER 10 2026.....SUNRISE 640 AM PDT SUNSET 731 PM PDT
SEPTEMBER 11 2026.....SUNRISE 642 AM PDT SUNSET 729 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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