894
CDUS46 KSEW 170828
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PDT WED MAY 17 2023
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 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 78 457 PM 84 1985 67 11 60
2008
MINIMUM 55 431 AM 40 2003 49 6 45
AVERAGE 67 58 9 53
PRECIPITATION (IN)
YESTERDAY T 0.64 1988 0.05 -0.05 T
MONTH TO DATE 0.91 1.03 -0.12 2.94
SINCE OCT 1 27.67 33.86 -6.19 41.45
SINCE JAN 1 12.78 17.92 -5.14 21.35
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 8.1 9.2
SINCE JUL 1 8.1 9.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 8 -8 12
MONTH TO DATE 92 146 -54 227
SINCE MAR 1 1170 1115 55 1309
SINCE JUL 1 4257 4162 95 4566
COOLING
YESTERDAY 2 0 2 0
MONTH TO DATE 27 0 27 0
SINCE MAR 1 27 1 26 0
SINCE JAN 1 27 1 26 0
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 5.3
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 300 AM
LOWEST 42 500 PM
AVERAGE 65
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 90 2008
MINIMUM TEMPERATURE (F) 49 39 1966
2011
SUNRISE AND SUNSET
MAY 17 2023...........SUNRISE 530 AM PDT SUNSET 842 PM PDT
MAY 18 2023...........SUNRISE 529 AM PDT SUNSET 843 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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