726
CDUS46 KSEW 170826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SAT MAY 17 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 16 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 59 435 PM 84 1985 67 -8 64
2008
MINIMUM 48 658 AM 40 2003 49 -1 49
AVERAGE 54 58 -4 57
PRECIPITATION (IN)
YESTERDAY 0.03 0.64 1988 0.05 -0.02 0.02
MONTH TO DATE 0.18 1.03 -0.85 0.30
SINCE OCT 1 26.69 33.86 -7.17 31.06
SINCE JAN 1 13.29 17.92 -4.63 13.91
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 2.3 0.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 11 8 3 8
MONTH TO DATE 150 146 4 135
SINCE MAR 1 1077 1115 -38 1104
SINCE JUL 1 4234 4162 72 4015
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 7
SINCE MAR 1 0 1 -1 7
SINCE JAN 1 0 1 -1 7
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WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION S (190)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 6.3
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 200 AM
LOWEST 67 400 PM
AVERAGE 80
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 90 2008
MINIMUM TEMPERATURE (F) 49 39 1966
2011
SUNRISE AND SUNSET
MAY 17 2025...........SUNRISE 529 AM PDT SUNSET 843 PM PDT
MAY 18 2025...........SUNRISE 528 AM PDT SUNSET 844 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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