334
CDUS46 KSEW 200930
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
130 AM PST WED DEC 20 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 19 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 52 940 AM 56 1969 46 6 35
1994
MINIMUM 47 1157 PM 17 1949 37 10 30
1990
AVERAGE 50 42 8 33
PRECIPITATION (IN)
YESTERDAY 0.12 1.32 2019 0.18 -0.06 0.04
MONTH TO DATE 6.87 3.50 3.37 2.43
SINCE OCT 1 15.54 13.72 1.82 9.77
SINCE JAN 1 33.36 37.12 -3.76 35.15
SNOWFALL (IN)
YESTERDAY 0.0 3.3 1964 0.2
MONTH TO DATE 0.0 3.8
SINCE OCT 1 0.0 4.9
SINCE JUL 1 0.0 4.9
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 15 23 -8 32
MONTH TO DATE 372 430 -58 517
SINCE DEC 1 372 430 -58 517
SINCE JUL 1 1375 1491 -116 1467
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
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WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION E (110)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (110)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION E (70)
AVERAGE WIND SPEED 8.3
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 600 PM
LOWEST 58 300 AM
AVERAGE 74
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 46 59 2018
MINIMUM TEMPERATURE (F) 37 14 1990
2008
SUNRISE AND SUNSET
DECEMBER 20 2023......SUNRISE 753 AM PST SUNSET 420 PM PST
DECEMBER 21 2023......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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