898
CDUS46 KSEW 210832
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
132 AM PDT WED MAY 21 2025
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 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 60 329 PM 92 1963 67 -7 64
MINIMUM 47 555 AM 40 1960 50 -3 45
AVERAGE 54 58 -4 55
PRECIPITATION (IN)
YESTERDAY 0.00 0.56 2007 0.05 -0.05 0.00
MONTH TO DATE 0.60 1.26 -0.66 0.54
SINCE OCT 1 27.11 34.09 -6.98 31.30
SINCE JAN 1 13.71 18.15 -4.44 14.15
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 7 4 10
MONTH TO DATE 193 174 19 180
SINCE MAR 1 1120 1143 -23 1149
SINCE JUL 1 4277 4190 87 4060
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 12 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 12.7
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 300 AM
LOWEST 55 600 PM
AVERAGE 73
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 93 1963
MINIMUM TEMPERATURE (F) 50 39 1960
SUNRISE AND SUNSET
MAY 21 2025...........SUNRISE 525 AM PDT SUNSET 847 PM PDT
MAY 22 2025...........SUNRISE 524 AM PDT SUNSET 848 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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