675
CDUS46 KSEW 190116
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
616 PM PDT SUN MAY 18 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 18 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 62 432 PM 89 1958 67 -5 58
MINIMUM 45 449 AM 37 1950 49 -4 47
2003
AVERAGE 54 58 -4 53
PRECIPITATION (IN)
TODAY 0.00 0.72 2005 0.06 -0.06 0.24
MONTH TO DATE 0.36 1.15 -0.79 0.54
SINCE OCT 1 26.87 33.98 -7.11 31.30
SINCE JAN 1 13.47 18.04 -4.57 14.15
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 2.3 0.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 11 7 4 12
MONTH TO DATE 171 160 11 158
SINCE MAR 1 1098 1129 -31 1127
SINCE JUL 1 4255 4176 79 4038
COOLING
TODAY 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 11 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 11.0
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 1200 AM
LOWEST 41 300 PM
AVERAGE 59
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 88 1963
MINIMUM TEMPERATURE (F) 49 38 1975
SUNRISE AND SUNSET
MAY 18 2025...........SUNRISE 528 AM PDT SUNSET 844 PM PDT
MAY 19 2025...........SUNRISE 527 AM PDT SUNSET 845 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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