644
CDUS46 KSEW 210117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT FRI MAR 20 2026
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MARCH 20 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 58 319 PM 79 2019 55 3 49
MINIMUM 52 910 AM 26 1955 40 12 41
AVERAGE 55 48 7 45
PRECIPITATION (IN)
TODAY 0.30 0.76 1984 0.13 0.17 0.43
MONTH TO DATE 5.45 2.76 2.69 2.94
SINCE OCT 1 29.42 28.24 1.18 21.74
SINCE JAN 1 12.64 12.30 0.34 8.34
SNOWFALL (IN)
TODAY 0.0 2.3 1966 0.0
MONTH TO DATE 3.0 0.0
SINCE OCT 1 3.0 2.3
SINCE JUL 1 3.0 2.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 10 17 -7 20
MONTH TO DATE 366 374 -8 396
SINCE MAR 1 366 374 -8 396
SINCE JUL 1 3116 3421 -305 3553
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
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WIND (MPH)
RESULTANT WIND SPEED 10 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 10.6
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 1200 AM
LOWEST 67 400 PM
AVERAGE 82
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 55 69 1992
MINIMUM TEMPERATURE (F) 41 29 1952
1954
2009
SUNRISE AND SUNSET
MARCH 20 2026.........SUNRISE 712 AM PDT SUNSET 722 PM PDT
MARCH 21 2026.........SUNRISE 710 AM PDT SUNSET 724 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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