637
CDUS46 KSEW 190927
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PST TUE DEC 19 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 18 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 50 1138 PM 54 2003 47 3 42
2004
2018
MINIMUM 38 209 AM 18 1964 37 1 31
AVERAGE 44 42 2 37
PRECIPITATION (IN)
YESTERDAY 0.05 1.23 1960 0.18 -0.13 0.02
MONTH TO DATE 6.75 3.32 3.43 2.39
SINCE OCT 1 15.42 13.54 1.88 9.73
SINCE JAN 1 33.24 36.94 -3.70 35.11
SNOWFALL (IN)
YESTERDAY 0.0 5.1 1968 0.2
MONTH TO DATE 0.0 3.6
SINCE OCT 1 0.0 4.7
SINCE JUL 1 0.0 4.7
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 21 23 -2 28
MONTH TO DATE 357 407 -50 485
SINCE DEC 1 357 407 -50 485
SINCE JUL 1 1360 1468 -108 1435
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 2 RESULTANT WIND DIRECTION SE (140)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 4.0
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
FOG W/VISIBILITY <= 1/4 MILE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 600 AM
LOWEST 71 1100 PM
AVERAGE 86
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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 2023......SUNRISE 753 AM PST SUNSET 420 PM PST
DECEMBER 20 2023......SUNRISE 753 AM PST SUNSET 420 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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