423
CDUS46 KSEW 090826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT SAT SEP 09 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 8 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 75 402 PM 85 1993 74 1 73
2011
MINIMUM 52 522 AM 43 1950 55 -3 52
AVERAGE 64 64 0 63
PRECIPITATION (IN)
YESTERDAY 0.00 0.60 1979 0.05 -0.05 0.00
1994
MONTH TO DATE 0.13 0.35 -0.22 0.07
SINCE OCT 1 29.40 38.08 -8.68 45.30
SINCE JAN 1 14.51 22.14 -7.63 25.20
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 MM
DEGREE DAYS
HEATING
YESTERDAY 1 2 -1 2
MONTH TO DATE 15 16 -1 2
SINCE SEP 1 15 16 -1 2
SINCE JUL 1 27 71 -44 22
COOLING
YESTERDAY 0 2 -2 0
MONTH TO DATE 12 16 -4 15
SINCE SEP 1 12 16 -4 15
SINCE JAN 1 364 249 115 359
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WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NW (320)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 500 AM
LOWEST 37 500 PM
AVERAGE 65
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 89 1963
MINIMUM TEMPERATURE (F) 55 40 1952
SUNRISE AND SUNSET
SEPTEMBER 9 2023.....SUNRISE 638 AM PDT SUNSET 734 PM PDT
SEPTEMBER 10 2023.....SUNRISE 640 AM PDT SUNSET 732 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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