164
CDUS46 KSEW 100117
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
617 PM PDT MON SEP 09 2024
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 9 2024...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2024
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 67 417 PM 89 1963 74 -7 81
MINIMUM 58 634 AM 40 1952 55 3 56
AVERAGE 63 64 -1 69
PRECIPITATION (IN)
TODAY T 0.61 1982 0.04 -0.04 0.00
MONTH TO DATE T 0.39 -0.39 0.13
SINCE OCT 1 35.10 38.12 -3.02 29.40
SINCE JAN 1 17.95 22.18 -4.23 14.51
SNOWFALL (IN)
TODAY MM MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.3 8.1
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 2 2 0 0
MONTH TO DATE 2 18 -16 15
SINCE SEP 1 2 18 -16 15
SINCE JUL 1 38 73 -35 27
COOLING
TODAY 0 2 -2 4
MONTH TO DATE 37 18 19 16
SINCE SEP 1 37 18 19 16
SINCE JAN 1 310 251 59 368
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 6.3
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 300 AM
LOWEST 68 200 PM
AVERAGE 79
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 92 2022
MINIMUM TEMPERATURE (F) 55 39 1952
SUNRISE AND SUNSET
SEPTEMBER 9 2024.....SUNRISE 639 AM PDT SUNSET 732 PM PDT
SEPTEMBER 10 2024.....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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