698
CDUS46 KSEW 010124
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
624 PM PDT MON SEP 30 2024
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 30 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 67 358 PM 82 1992 67 0 62
MINIMUM 48 649 AM 36 1950 51 -3 48
AVERAGE 58 59 -1 55
PRECIPITATION (IN)
TODAY 0.00 1.65 1953 0.08 -0.08 0.00
MONTH TO DATE 0.62 1.61 -0.99 3.44
SINCE OCT 1 35.72 39.34 -3.62 32.71
SINCE JAN 1 18.57 23.40 -4.83 17.82
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 MM
DEGREE DAYS
HEATING
TODAY 7 6 1 10
MONTH TO DATE 106 103 3 108
SINCE SEP 1 106 103 3 108
SINCE JUL 1 144 158 -14 120
COOLING
TODAY 0 0 0 0
MONTH TO DATE 42 30 12 26
SINCE SEP 1 42 30 12 26
SINCE JAN 1 315 263 52 378
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION N (20)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 7.9
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 700 AM
LOWEST 36 400 PM
AVERAGE 58
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 89 1987
MINIMUM TEMPERATURE (F) 51 35 1950
SUNRISE AND SUNSET
SEPTEMBER 30 2024.....SUNRISE 708 AM PDT SUNSET 649 PM PDT
OCTOBER 1 2024.......SUNRISE 709 AM PDT SUNSET 647 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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