662
CDUS46 KSEW 200826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT FRI SEP 20 2024
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 19 2024...
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)
YESTERDAY
MAXIMUM 68 356 PM 82 1999 71 -3 67
MINIMUM 52 506 AM 40 1947 53 -1 53
1957
AVERAGE 60 62 -2 60
PRECIPITATION (IN)
YESTERDAY 0.00 0.79 1959 0.06 -0.06 T
MONTH TO DATE 0.39 0.91 -0.52 0.29
SINCE OCT 1 35.49 38.64 -3.15 29.56
SINCE JAN 1 18.34 22.70 -4.36 14.67
SNOWFALL (IN)
YESTERDAY 0.0 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
YESTERDAY 5 4 1 5
MONTH TO DATE 49 47 2 30
SINCE SEP 1 49 47 2 30
SINCE JUL 1 87 102 -15 42
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 37 28 9 26
SINCE SEP 1 37 28 9 26
SINCE JAN 1 310 261 49 378
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WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 4.4
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 400 AM
LOWEST 56 500 PM
AVERAGE 77
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 88 1974
MINIMUM TEMPERATURE (F) 53 40 1949
SUNRISE AND SUNSET
SEPTEMBER 20 2024.....SUNRISE 654 AM PDT SUNSET 710 PM PDT
SEPTEMBER 21 2024.....SUNRISE 656 AM PDT SUNSET 708 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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