321
CDUS46 KSEW 160118
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
618 PM PDT FRI SEP 15 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 15 2023...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 84 413 PM 93 1967 72 12 69
MINIMUM 54 610 AM 42 1952 54 0 57
AVERAGE 69 63 6 63
PRECIPITATION (IN)
TODAY 0.00 0.69 1959 0.05 -0.05 0.00
MONTH TO DATE 0.18 0.69 -0.51 0.07
SINCE OCT 1 29.45 38.42 -8.97 45.30
SINCE JAN 1 14.56 22.48 -7.92 25.20
SNOWFALL (IN)
TODAY 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
TODAY 0 3 -3 2
MONTH TO DATE 19 33 -14 6
SINCE SEP 1 19 33 -14 6
SINCE JUL 1 31 88 -57 26
COOLING
TODAY 4 1 3 0
MONTH TO DATE 24 24 0 29
SINCE SEP 1 24 24 0 29
SINCE JAN 1 376 257 119 373
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NW (330)
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 4.1
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 700 AM
LOWEST 23 400 PM
AVERAGE 55
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 72 91 1967
MINIMUM TEMPERATURE (F) 54 44 1952
1992
SUNRISE AND SUNSET
SEPTEMBER 15 2023.....SUNRISE 646 AM PDT SUNSET 721 PM PDT
SEPTEMBER 16 2023.....SUNRISE 648 AM PDT SUNSET 719 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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