579
CDUS46 KSEW 010826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT THU MAY 01 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR APRIL 30 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
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TEMPERATURE (F)
YESTERDAY
MAXIMUM 61 441 PM 85 1976 63 -2 56
MINIMUM 43 529 AM 32 1954 46 -3 41
AVERAGE 52 54 -2 49
PRECIPITATION (IN)
YESTERDAY 0.00 0.87 1987 0.08 -0.08 0.02
MONTH TO DATE 2.55 3.18 -0.63 0.89
SINCE OCT 1 26.51 32.83 -6.32 30.76
SINCE JAN 1 13.11 16.89 -3.78 13.61
SNOWFALL (IN)
YESTERDAY 0.0 T 1954 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 2.3 0.3
SINCE JUL 1 2.3 0.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 13 11 2 16
MONTH TO DATE 381 412 -31 420
SINCE MAR 1 927 969 -42 969
SINCE JUL 1 4084 4016 68 3880
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 1 -1 0
SINCE MAR 1 0 1 -1 0
SINCE JAN 1 0 1 -1 0
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WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NW (330)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 5.0
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 700 AM
LOWEST 47 400 PM
AVERAGE 67
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 85 2014
MINIMUM TEMPERATURE (F) 46 28 1954
SUNRISE AND SUNSET
MAY 1 2025...........SUNRISE 552 AM PDT SUNSET 822 PM PDT
MAY 2 2025...........SUNRISE 550 AM PDT SUNSET 823 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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