132
CDUS46 KSEW 120121
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
621 PM PDT MON SEP 11 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 11 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 73 234 PM 93 2013 73 0 72
MINIMUM 60 634 AM 40 1952 55 5 60
AVERAGE 67 64 3 66
PRECIPITATION (IN)
TODAY 0.00 0.58 1956 0.05 -0.05 T
MONTH TO DATE 0.13 0.49 -0.36 0.07
SINCE OCT 1 29.40 38.22 -8.82 45.30
SINCE JAN 1 14.51 22.28 -7.77 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 2 -2 0
MONTH TO DATE 15 22 -7 2
SINCE SEP 1 15 22 -7 2
SINCE JUL 1 27 77 -50 22
COOLING
TODAY 2 1 1 1
MONTH TO DATE 20 20 0 28
SINCE SEP 1 20 20 0 28
SINCE JAN 1 372 253 119 372
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 5.2
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 200 AM
LOWEST 55 200 PM
AVERAGE 67
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 85 1961
1975
MINIMUM TEMPERATURE (F) 54 44 1949
1962
SUNRISE AND SUNSET
SEPTEMBER 11 2023.....SUNRISE 641 AM PDT SUNSET 730 PM PDT
SEPTEMBER 12 2023.....SUNRISE 642 AM PDT SUNSET 727 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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