Climatological Report (Daily)
Issued by NWS
Issued by NWS
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909
CDUS46 KSEW 010116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT SUN AUG 31 2025
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 31 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 76 324 PM 92 1987 76 0 84
MINIMUM 56 608 AM 46 1950 56 0 60
AVERAGE 66 66 0 72
PRECIPITATION (IN)
TODAY 0.00 0.56 1961 0.04 -0.04 0.00
MONTH TO DATE 1.14 0.97 0.17 1.66
SINCE OCT 1 28.91 37.73 -8.82 35.31
SINCE JAN 1 15.51 21.79 -6.28 18.16
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 3 24 -21 31
SINCE JUN 1 118 173 -55 170
SINCE JUL 1 24 55 -31 38
COOLING
TODAY 1 2 -1 7
MONTH TO DATE 130 98 32 83
SINCE JUN 1 291 223 68 266
SINCE JAN 1 294 233 61 273
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION NW (330)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 4.7
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 600 AM
LOWEST 54 300 PM
AVERAGE 76
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 91 1987
MINIMUM TEMPERATURE (F) 56 46 1973
SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE 627 AM PDT SUNSET 750 PM PDT
SEPTEMBER 1 2025.....SUNRISE 629 AM PDT SUNSET 749 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$