505
CDUS46 KSEW 180930
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
130 AM PST SUN JAN 18 2026
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JANUARY 17 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 54 244 PM 58 1946 48 6 43
MINIMUM 35 632 AM 15 1950 38 -3 32
AVERAGE 45 43 2 38
PRECIPITATION (IN)
YESTERDAY 0.00 2.39 2005 0.20 -0.20 0.00
MONTH TO DATE 3.31 3.26 0.05 1.04
SINCE OCT 1 20.09 19.20 0.89 14.44
SINCE JAN 1 3.31 3.26 0.05 1.04
SNOWFALL (IN)
YESTERDAY 0.0 5.7 1954 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 20 22 -2 27
MONTH TO DATE 334 382 -48 399
SINCE DEC 1 940 1093 -153 1045
SINCE JUL 1 1854 2154 -300 2086
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 0 0 0 0
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WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION N (0)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 8.9
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 200 AM
LOWEST 48 100 PM
AVERAGE 73
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 48 60 2005
MINIMUM TEMPERATURE (F) 38 9 1950
SUNRISE AND SUNSET
JANUARY 18 2026.......SUNRISE 750 AM PST SUNSET 450 PM PST
JANUARY 19 2026.......SUNRISE 749 AM PST SUNSET 452 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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