729
CDUS46 KSEW 120826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT TUE MAY 12 2026
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 11 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 72 329 PM 87 1971 66 6 62
MINIMUM 51 1250 AM 35 1953 48 3 49
AVERAGE 62 57 5 56
PRECIPITATION (IN)
YESTERDAY 0.00 0.47 1954 0.06 -0.06 0.02
2017
MONTH TO DATE T 0.74 -0.74 0.02
SINCE OCT 1 33.45 33.57 -0.12 26.53
SINCE JAN 1 16.67 17.63 -0.96 13.13
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 3 9 -6 9
MONTH TO DATE 58 106 -48 95
SINCE MAR 1 1014 1075 -61 1022
SINCE JUL 1 3764 4122 -358 4179
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 4 0 4 0
SINCE MAR 1 4 1 3 0
SINCE JAN 1 4 1 3 0
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WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION N (360)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 9.7
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 1200 AM
LOWEST 38 200 PM
AVERAGE 64
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 82 2023
MINIMUM TEMPERATURE (F) 48 38 1964
1985
2011
SUNRISE AND SUNSET
MAY 12 2026...........SUNRISE 536 AM PDT SUNSET 836 PM PDT
MAY 13 2026...........SUNRISE 535 AM PDT SUNSET 837 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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