962
CDUS46 KSEW 220116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT THU MAY 21 2026
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 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 76 453 PM 93 1963 67 9 62
MINIMUM 49 441 AM 39 1960 50 -1 49
AVERAGE 63 59 4 56
PRECIPITATION (IN)
TODAY 0.00 0.66 2024 0.06 -0.06 0.00
MONTH TO DATE 0.49 1.32 -0.83 0.60
SINCE OCT 1 33.94 34.15 -0.21 27.11
SINCE JAN 1 17.16 18.21 -1.05 13.71
SNOWFALL (IN)
TODAY 0.0 T 1953 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 2 7 -5 9
MONTH TO DATE 145 181 -36 202
SINCE MAR 1 1101 1150 -49 1129
SINCE JUL 1 3851 4197 -346 4286
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
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION N (350)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 6.2
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 500 AM
LOWEST 29 300 PM
AVERAGE 56
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 86 1969
MINIMUM TEMPERATURE (F) 50 37 1960
SUNRISE AND SUNSET
MAY 21 2026...........SUNRISE 525 AM PDT SUNSET 847 PM PDT
MAY 22 2026...........SUNRISE 524 AM PDT SUNSET 848 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page