013
CDUS46 KSEW 180826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SAT APR 18 2026
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 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 56 235 PM 80 2016 59 -3 65
2021
MINIMUM 42 556 AM 33 1964 43 -1 43
AVERAGE 49 51 -2 54
PRECIPITATION (IN)
YESTERDAY 0.00 0.73 2014 0.11 -0.11 0.00
MONTH TO DATE 2.22 1.97 0.25 1.95
SINCE OCT 1 32.90 31.62 1.28 25.91
SINCE JAN 1 16.12 15.68 0.44 12.51
SNOWFALL (IN)
YESTERDAY 0.0 1.2 1972 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 16 14 2 11
MONTH TO DATE 245 254 -9 231
SINCE MAR 1 830 811 19 777
SINCE JUL 1 3580 3858 -278 3934
COOLING
YESTERDAY 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
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WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NE (40)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 100 AM
LOWEST 43 500 PM
AVERAGE 61
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 60 89 2016
MINIMUM TEMPERATURE (F) 44 34 1950
1961
1964
SUNRISE AND SUNSET
APRIL 18 2026.........SUNRISE 615 AM PDT SUNSET 803 PM PDT
APRIL 19 2026.........SUNRISE 613 AM PDT SUNSET 805 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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