145
CDUS46 KSEW 220119
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
619 PM PDT TUE APR 21 2026
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 21 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 60 241 PM 76 1982 60 0 57
MINIMUM 50 515 AM 29 1951 44 6 43
AVERAGE 55 52 3 50
PRECIPITATION (IN)
TODAY T 0.87 2010 0.10 -0.10 T
MONTH TO DATE 2.22 2.38 -0.16 2.36
SINCE OCT 1 32.90 32.03 0.87 26.32
SINCE JAN 1 16.12 16.09 0.03 12.92
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 3.0 2.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 10 13 -3 15
MONTH TO DATE 272 306 -34 279
SINCE MAR 1 857 863 -6 825
SINCE JUL 1 3607 3910 -303 3982
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 8.3
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 500 AM
LOWEST 53 1000 AM
AVERAGE 67
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 61 78 1977
2005
MINIMUM TEMPERATURE (F) 44 35 1950
1964
1972
SUNRISE AND SUNSET
APRIL 21 2026.........SUNRISE 609 AM PDT SUNSET 807 PM PDT
APRIL 22 2026.........SUNRISE 607 AM PDT SUNSET 809 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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