365
CDUS46 KSEW 090828
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PDT FRI MAY 09 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 8 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
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 63 451 PM 84 1969 65 -2 64
1987
MINIMUM 43 507 AM 36 1999 47 -4 42
AVERAGE 53 56 -3 53
PRECIPITATION (IN)
YESTERDAY 0.00 0.54 2014 0.06 -0.06 0.00
MONTH TO DATE T 0.55 -0.55 0.28
SINCE OCT 1 26.51 33.38 -6.87 31.04
SINCE JAN 1 13.11 17.44 -4.33 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 12 9 3 12
MONTH TO DATE 69 79 -10 106
SINCE MAR 1 996 1048 -52 1075
SINCE JUL 1 4153 4095 58 3986
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 2 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 7.8
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 300 AM
LOWEST 34 400 PM
AVERAGE 57
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 65 86 2020
MINIMUM TEMPERATURE (F) 48 38 1955
1985
1999
SUNRISE AND SUNSET
MAY 9 2025...........SUNRISE 540 AM PDT SUNSET 832 PM PDT
MAY 10 2025...........SUNRISE 538 AM PDT SUNSET 834 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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