552
CDUS46 KSEW 200827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT MON JUL 20 2026
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR JULY 19 2026
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 78 453 PM 95 1988 78 0 70
2015
MINIMUM 56 525 AM 48 1962 57 -1 55
AVERAGE 67 68 -1 63
PRECIPITATION (IN)
YESTERDAY 0.00 0.45 1993 0.01 -0.01 0.00
MONTH TO DATE 0.36 0.40 -0.04 T
SINCE OCT 1 36.29 36.56 -0.27 27.76
SINCE JAN 1 19.51 20.62 -1.11 14.36
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 3.0 2.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 2
MONTH TO DATE 20 25 -5 9
SINCE JUN 1 115 143 -28 103
SINCE JUL 1 20 25 -5 9
COOLING
YESTERDAY 2 4 -2 0
MONTH TO DATE 29 48 -19 87
SINCE JUN 1 100 77 23 129
SINCE JAN 1 110 87 23 132
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WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION N (360)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 10.0
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 300 AM
LOWEST 33 500 PM
AVERAGE 59
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 100 1994
MINIMUM TEMPERATURE (F) 57 50 1953
1955
1962
SUNRISE AND SUNSET
JULY 20 2026..........SUNRISE 533 AM PDT SUNSET 857 PM PDT
JULY 21 2026..........SUNRISE 534 AM PDT SUNSET 856 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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