606
CDUS46 KSEW 120826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT TUE AUG 12 2025
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 11 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 87 531 PM 96 2014 78 9 71
MINIMUM 69 517 AM 46 1954 58 11 59
AVERAGE 78 68 10 65
PRECIPITATION (IN)
YESTERDAY 0.00 0.32 2009 0.03 -0.03 0.00
MONTH TO DATE 0.16 0.26 -0.10 0.00
SINCE OCT 1 27.93 37.02 -9.09 33.65
SINCE JAN 1 14.53 21.08 -6.55 16.50
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 0
MONTH TO DATE 2 4 -2 2
SINCE JUN 1 117 153 -36 141
SINCE JUL 1 23 35 -12 9
COOLING
YESTERDAY 13 4 9 0
MONTH TO DATE 35 44 -9 53
SINCE JUN 1 196 169 27 236
SINCE JAN 1 199 179 20 243
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WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 10.4
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 63 600 AM
LOWEST 35 700 PM
AVERAGE 49
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 96 1977
MINIMUM TEMPERATURE (F) 58 49 1949
1950
1953
SUNRISE AND SUNSET
AUGUST 12 2025........SUNRISE 602 AM PDT SUNSET 825 PM PDT
AUGUST 13 2025........SUNRISE 603 AM PDT SUNSET 824 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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