320
CDUS46 KSEW 190928
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PST THU DEC 19 2024
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 18 2024...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2024
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 55R 1246 AM 54 2003 47 8 50
2004
2018
MINIMUM 46 936 PM 18 1964 37 9 38
AVERAGE 51 42 9 44
PRECIPITATION (IN)
YESTERDAY 0.33 1.23 1960 0.18 0.15 0.05
MONTH TO DATE 2.70 3.32 -0.62 6.75
SINCE OCT 1 10.60 13.54 -2.94 15.42
SINCE JAN 1 29.38 36.94 -7.56 33.24
SNOWFALL (IN)
YESTERDAY 0.0 5.1 1968 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 14 23 -9 21
MONTH TO DATE 406 407 -1 357
SINCE DEC 1 406 407 -1 357
SINCE JUL 1 1447 1468 -21 1360
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 315 263 52 378
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 56 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 14.0
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 200 AM
LOWEST 71 1100 PM
AVERAGE 82
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 56 1969
1994
MINIMUM TEMPERATURE (F) 37 17 1949
1990
SUNRISE AND SUNSET
DECEMBER 19 2024......SUNRISE 753 AM PST SUNSET 420 PM PST
DECEMBER 20 2024......SUNRISE 754 AM PST SUNSET 421 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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