477
CDUS46 KSEW 310927
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PST SUN DEC 31 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 30 2023...
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)
YESTERDAY
MAXIMUM 56R 1219 AM 56 1945 47 9 53
1958
MINIMUM 43 1159 PM 6 1968 37 6 42
AVERAGE 50 42 8 48
PRECIPITATION (IN)
YESTERDAY 0.10 1.06 1980 0.18 -0.08 0.36
MONTH TO DATE 8.48 5.54 2.94 7.54
SINCE OCT 1 17.15 15.76 1.39 14.88
SINCE JAN 1 34.97 39.16 -4.19 40.26
SNOWFALL (IN)
YESTERDAY 0.0 3.7 1968 0.0
MONTH TO DATE 0.0 4.7
SINCE OCT 1 0.0 5.8
SINCE JUL 1 0.0 5.8
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 15 23 -8 17
MONTH TO DATE 575 686 -111 786
SINCE DEC 1 575 686 -111 786
SINCE JUL 1 1578 1747 -169 1736
COOLING
YESTERDAY 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 5 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 100 PM
LOWEST 47 1200 AM
AVERAGE 70
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 56 1963
1996
MINIMUM TEMPERATURE (F) 37 13 1968
1978
SUNRISE AND SUNSET
DECEMBER 31 2023......SUNRISE 757 AM PST SUNSET 428 PM PST
JANUARY 1 2024.......SUNRISE 757 AM PST SUNSET 429 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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