976
CDUS46 KSEW 100117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT SAT AUG 09 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 9 2025
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 81 317 PM 99 1960 79 2 84
1981
MINIMUM 58 456 AM 47 1950 58 0 61
AVERAGE 70 68 2 73
PRECIPITATION (IN)
TODAY 0.00 0.61 1957 0.02 -0.02 0.00
1991
MONTH TO DATE 0.16 0.20 -0.04 0.00
SINCE OCT 1 27.93 36.96 -9.03 33.65
SINCE JAN 1 14.53 21.02 -6.49 16.50
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 2.3 0.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 1 -1 0
MONTH TO DATE 2 2 0 2
SINCE JUN 1 117 151 -34 141
SINCE JUL 1 23 33 -10 9
COOLING
TODAY 5 4 1 8
MONTH TO DATE 12 36 -24 50
SINCE JUN 1 173 161 12 233
SINCE JAN 1 176 171 5 240
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WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 75 400 AM
LOWEST 39 400 PM
AVERAGE 57
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 98 1981
MINIMUM TEMPERATURE (F) 58 46 1954
SUNRISE AND SUNSET
AUGUST 9 2025........SUNRISE 558 AM PDT SUNSET 830 PM PDT
AUGUST 10 2025........SUNRISE 559 AM PDT SUNSET 829 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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