Climatological Report (Daily)
Issued by NWS
Issued by NWS
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998
CDUS46 KSEW 310826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SUN AUG 31 2025
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 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
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 70 1258 PM 90 2022 76 -6 83
MINIMUM 57 658 AM 45 1950 56 1 58
AVERAGE 64 66 -2 71
PRECIPITATION (IN)
YESTERDAY 0.00 0.40 2015 0.04 -0.04 0.00
MONTH TO DATE 1.14 0.93 0.21 1.66
SINCE OCT 1 28.91 37.69 -8.78 35.31
SINCE JAN 1 15.51 21.75 -6.24 18.16
SNOWFALL (IN)
YESTERDAY 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
YESTERDAY 1 1 0 0
MONTH TO DATE 3 23 -20 31
SINCE JUN 1 118 172 -54 170
SINCE JUL 1 24 54 -30 38
COOLING
YESTERDAY 0 2 -2 6
MONTH TO DATE 129 96 33 76
SINCE JUN 1 290 221 69 259
SINCE JAN 1 293 231 62 266
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION W (290)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 4.4
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 600 AM
LOWEST 70 100 PM
AVERAGE 83
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 92 1987
MINIMUM TEMPERATURE (F) 56 46 1950
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.
$$