Climatological Report (Daily)
Issued by NWS
Issued by NWS
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334
CDUS46 KSEW 230827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT SAT AUG 23 2025
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 22 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 89R 426 PM 89 2018 77 12 70
MINIMUM 57 513 AM 45 1960 57 0 58
AVERAGE 73 67 6 64
PRECIPITATION (IN)
YESTERDAY 0.00 1.41 2001 0.04 -0.04 0.10
MONTH TO DATE 1.14 0.62 0.52 0.74
SINCE OCT 1 28.91 37.38 -8.47 34.39
SINCE JAN 1 15.51 21.44 -5.93 17.24
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 0 1 -1 1
MONTH TO DATE 2 15 -13 6
SINCE JUN 1 117 164 -47 145
SINCE JUL 1 23 46 -23 13
COOLING
YESTERDAY 8 3 5 0
MONTH TO DATE 75 79 -4 69
SINCE JUN 1 236 204 32 252
SINCE JAN 1 239 214 25 259
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION N (0)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 10.5
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 500 AM
LOWEST 27 300 PM
AVERAGE 52
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 91 1988
MINIMUM TEMPERATURE (F) 57 46 1955
SUNRISE AND SUNSET
AUGUST 23 2025........SUNRISE 617 AM PDT SUNSET 806 PM PDT
AUGUST 24 2025........SUNRISE 618 AM PDT SUNSET 804 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$