113
CDUS46 KSEW 210115
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
615 PM PDT WED MAY 20 2026
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 20 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 68 448 PM 92 1963 67 1 60
MINIMUM 50 535 AM 40 1960 50 0 47
AVERAGE 59 58 1 54
PRECIPITATION (IN)
TODAY 0.00 0.56 2007 0.05 -0.05 0.00
MONTH TO DATE 0.49 1.26 -0.77 0.60
SINCE OCT 1 33.94 34.09 -0.15 27.11
SINCE JAN 1 17.16 18.15 -0.99 13.71
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 6 7 -1 11
MONTH TO DATE 143 174 -31 193
SINCE MAR 1 1099 1143 -44 1120
SINCE JUL 1 3849 4190 -341 4277
COOLING
TODAY 0 0 0 0
MONTH TO DATE 6 0 6 0
SINCE MAR 1 6 1 5 0
SINCE JAN 1 6 1 5 0
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WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION NW (300)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 5.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 1200 AM
LOWEST 48 300 PM
AVERAGE 70
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 93 1963
MINIMUM TEMPERATURE (F) 50 39 1960
SUNRISE AND SUNSET
MAY 20 2026...........SUNRISE 526 AM PDT SUNSET 846 PM PDT
MAY 21 2026...........SUNRISE 525 AM PDT SUNSET 847 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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