957
CDUS46 KSEW 210828
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PDT MON JUL 21 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JULY 20 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 65 629 PM 100 1994 78 -13 88
MINIMUM 51 451 AM 50 1953 57 -6 62
1955
1962
AVERAGE 58 68 -10 75
PRECIPITATION (IN)
YESTERDAY 0.00 0.60 2012 0.02 -0.02 0.00
MONTH TO DATE T 0.42 -0.42 0.00
SINCE OCT 1 27.76 36.58 -8.82 33.49
SINCE JAN 1 14.36 20.64 -6.28 16.34
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 7 1 6 0
MONTH TO DATE 16 26 -10 2
SINCE JUN 1 110 144 -34 134
SINCE JUL 1 16 26 -10 2
COOLING
YESTERDAY 0 4 -4 10
MONTH TO DATE 87 52 35 146
SINCE JUN 1 129 81 48 165
SINCE JAN 1 132 91 41 172
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 4.3
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 89 400 AM
LOWEST 58 600 PM
AVERAGE 74
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 97 2006
MINIMUM TEMPERATURE (F) 58 48 1951
SUNRISE AND SUNSET
JULY 21 2025..........SUNRISE 535 AM PDT SUNSET 856 PM PDT
JULY 22 2025..........SUNRISE 536 AM PDT SUNSET 855 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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