428
CDUS46 KSEW 100826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SUN SEP 10 2023
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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 9 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
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TEMPERATURE (F)
YESTERDAY
MAXIMUM 81 455 PM 89 1963 74 7 78
MINIMUM 56 609 AM 40 1952 55 1 55
AVERAGE 69 64 5 67
PRECIPITATION (IN)
YESTERDAY 0.00 0.61 1982 0.04 -0.04 0.00
MONTH TO DATE 0.13 0.39 -0.26 0.07
SINCE OCT 1 29.40 38.12 -8.72 45.30
SINCE JAN 1 14.51 22.18 -7.67 25.20
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 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 2 -2 0
MONTH TO DATE 15 18 -3 2
SINCE SEP 1 15 18 -3 2
SINCE JUL 1 27 73 -46 22
COOLING
YESTERDAY 4 2 2 2
MONTH TO DATE 16 18 -2 17
SINCE SEP 1 16 18 -2 17
SINCE JAN 1 368 251 117 361
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (330)
AVERAGE WIND SPEED 5.9
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 75 600 AM
LOWEST 32 500 PM
AVERAGE 54
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 92 2022
MINIMUM TEMPERATURE (F) 55 39 1952
SUNRISE AND SUNSET
SEPTEMBER 10 2023.....SUNRISE 640 AM PDT SUNSET 732 PM PDT
SEPTEMBER 11 2023.....SUNRISE 641 AM PDT SUNSET 730 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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