609
CDUS46 KSEW 170826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT WED JUN 17 2026
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JUNE 16 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 77 403 PM 88 1961 71 6 74
1969
MINIMUM 58 354 AM 42 1954 53 5 50
AVERAGE 68 62 6 62
PRECIPITATION (IN)
YESTERDAY 0.00 0.52 2005 0.04 -0.04 0.00
MONTH TO DATE 1.24 0.86 0.38 0.00
SINCE OCT 1 35.83 35.57 0.26 27.34
SINCE JAN 1 19.05 19.63 -0.58 13.94
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 3.0 2.3
SINCE JUL 1 3.0 2.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 3
MONTH TO DATE 61 75 -14 51
SINCE JUN 1 61 75 -14 51
SINCE JUL 1 3976 4333 -357 4378
COOLING
YESTERDAY 3 1 2 0
MONTH TO DATE 37 16 21 28
SINCE JUN 1 37 16 21 28
SINCE JAN 1 47 26 21 31
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WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION SW (230)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 7.5
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 62 1100 PM
LOWEST 38 200 AM
AVERAGE 50
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 91 1969
MINIMUM TEMPERATURE (F) 53 43 1954
SUNRISE AND SUNSET
JUNE 17 2026..........SUNRISE 512 AM PDT SUNSET 909 PM PDT
JUNE 18 2026..........SUNRISE 512 AM PDT SUNSET 909 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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