300
CDUS46 KSEW 220832
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
132 AM PDT FRI SEP 22 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 21 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
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 70 312 PM 88 1952 70 0 77
1974
MINIMUM 48 518 AM 39 1955 53 -5 50
1960
AVERAGE 59 61 -2 64
PRECIPITATION (IN)
YESTERDAY 0.00 0.94 1981 0.06 -0.06 0.00
MONTH TO DATE 0.70 1.02 -0.32 0.22
SINCE OCT 1 29.97 38.75 -8.78 45.45
SINCE JAN 1 15.08 22.81 -7.73 25.35
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 6 4 2 1
MONTH TO DATE 43 55 -12 17
SINCE SEP 1 43 55 -12 17
SINCE JUL 1 55 110 -55 37
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 26 30 -4 31
SINCE SEP 1 26 30 -4 31
SINCE JAN 1 378 263 115 375
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION NE (30)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 5.8
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 500 AM
LOWEST 43 400 PM
AVERAGE 68
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 92 1990
MINIMUM TEMPERATURE (F) 53 37 1955
SUNRISE AND SUNSET
SEPTEMBER 22 2023.....SUNRISE 656 AM PDT SUNSET 707 PM PDT
SEPTEMBER 23 2023.....SUNRISE 657 AM PDT SUNSET 705 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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