494
CDUS46 KSEW 210828
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PDT MON AUG 21 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 20 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 80 305 PM 91 2016 77 3 77
MINIMUM 58 600 AM 45 1945 57 1 62
AVERAGE 69 67 2 70
PRECIPITATION (IN)
YESTERDAY 0.00 0.70 2008 0.04 -0.04 0.00
MONTH TO DATE 0.04 0.55 -0.51 0.05
SINCE OCT 1 29.04 37.31 -8.27 45.23
SINCE JAN 1 14.15 21.37 -7.22 25.13
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 0 1 -1 0
MONTH TO DATE 0 13 -13 2
SINCE JUN 1 114 162 -48 159
SINCE JUL 1 2 44 -42 19
COOLING
YESTERDAY 4 3 1 5
MONTH TO DATE 140 73 67 105
SINCE JUN 1 288 198 90 282
SINCE JAN 1 323 208 115 282
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WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION N (350)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 7.2
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 75 600 AM
LOWEST 25 600 PM
AVERAGE 50
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 91 2018
MINIMUM TEMPERATURE (F) 57 44 1947
SUNRISE AND SUNSET
AUGUST 21 2023........SUNRISE 613 AM PDT SUNSET 810 PM PDT
AUGUST 22 2023........SUNRISE 615 AM PDT SUNSET 809 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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