816
CDUS46 KSEW 260118
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
618 PM PDT MON AUG 25 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 25 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 91R 344 PM 91 2016 77 14 73
MINIMUM 61 633 AM 45 1954 57 4 56
AVERAGE 76 67 9 65
PRECIPITATION (IN)
TODAY 0.00 0.59 1968 0.04 -0.04 0.00
MONTH TO DATE 1.14 0.73 0.41 1.52
SINCE OCT 1 28.91 37.49 -8.58 35.17
SINCE JAN 1 15.51 21.55 -6.04 18.02
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 18 -16 20
SINCE JUN 1 117 167 -50 159
SINCE JUL 1 23 49 -26 27
COOLING
TODAY 11 2 9 0
MONTH TO DATE 109 86 23 69
SINCE JUN 1 270 211 59 252
SINCE JAN 1 273 221 52 259
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NW (320)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION N (350)
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 75 400 AM
LOWEST 25 400 PM
AVERAGE 50
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 92 2016
MINIMUM TEMPERATURE (F) 57 46 1957
SUNRISE AND SUNSET
AUGUST 25 2025........SUNRISE 619 AM PDT SUNSET 802 PM PDT
AUGUST 26 2025........SUNRISE 621 AM PDT SUNSET 800 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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