921
CDUS46 KSEW 100826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SAT MAY 10 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 9 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 70 326 PM 86 2020 65 5 74
MINIMUM 44 429 AM 38 1955 48 -4 45
1985
1999
AVERAGE 57 56 1 60
PRECIPITATION (IN)
YESTERDAY 0.00 0.74 2000 0.06 -0.06 0.00
MONTH TO DATE T 0.61 -0.61 0.28
SINCE OCT 1 26.51 33.44 -6.93 31.04
SINCE JAN 1 13.11 17.50 -4.39 13.89
SNOWFALL (IN)
YESTERDAY 0.0 T 1953 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 8 9 -1 5
MONTH TO DATE 77 88 -11 111
SINCE MAR 1 1004 1057 -53 1080
SINCE JUL 1 4161 4104 57 3991
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 1 -1 0
SINCE JAN 1 0 1 -1 0
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WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION N (350)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 7.1
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 500 AM
LOWEST 24 300 PM
AVERAGE 52
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 87 2020
MINIMUM TEMPERATURE (F) 48 37 1947
SUNRISE AND SUNSET
MAY 10 2025...........SUNRISE 538 AM PDT SUNSET 834 PM PDT
MAY 11 2025...........SUNRISE 537 AM PDT SUNSET 835 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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