024
CDUS46 KSEW 180230
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
630 PM PST SUN DEC 17 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2023...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 49 306 PM 57 1994 47 2 40
MINIMUM 33 421 AM 11 1964 37 -4 30
AVERAGE 41 42 -1 35
PRECIPITATION (IN)
TODAY 0.00 1.61 1979 0.17 -0.17 0.14
MONTH TO DATE 6.70 3.14 3.56 2.37
SINCE OCT 1 15.37 13.36 2.01 9.71
SINCE JAN 1 33.19 36.76 -3.57 35.09
SNOWFALL (IN)
TODAY 0.0 0.1 1992 0.0
MONTH TO DATE 0.0 3.4
SINCE OCT 1 0.0 4.5
SINCE JUL 1 0.0 4.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 24 23 1 30
MONTH TO DATE 336 384 -48 457
SINCE DEC 1 336 384 -48 457
SINCE JUL 1 1339 1445 -106 1407
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 378 263 115 394
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION N (20)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 6.4
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 200 AM
LOWEST 61 300 PM
AVERAGE 81
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 54 2003
2004
2018
MINIMUM TEMPERATURE (F) 37 18 1964
SUNRISE AND SUNSET
DECEMBER 17 2023......SUNRISE 751 AM PST SUNSET 419 PM PST
DECEMBER 18 2023......SUNRISE 752 AM PST SUNSET 419 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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