893
CDUS46 KSEW 170927
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PST SUN DEC 17 2023
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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR DECEMBER 16 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 51 128 PM 57 1974 47 4 44
MINIMUM 36 658 AM 10 1964 37 -1 28
AVERAGE 44 42 2 36
PRECIPITATION (IN)
YESTERDAY 0.00 1.32 1997 0.18 -0.18 0.00
MONTH TO DATE 6.70 2.97 3.73 2.23
SINCE OCT 1 15.37 13.19 2.18 9.57
SINCE JAN 1 33.19 36.59 -3.40 34.95
SNOWFALL (IN)
YESTERDAY 0.0 1.1 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
YESTERDAY 21 23 -2 29
MONTH TO DATE 312 361 -49 427
SINCE DEC 1 312 361 -49 427
SINCE JUL 1 1315 1422 -107 1377
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 1 RESULTANT WIND DIRECTION NE (50)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 3.4
SKY COVER
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 500 AM
LOWEST 61 300 PM
AVERAGE 77
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 47 57 1994
MINIMUM TEMPERATURE (F) 37 11 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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