689
CDUS46 KSEW 180827
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
127 AM PDT FRI AUG 18 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR AUGUST 17 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 91 350 PM 96 1977 78 13 90
MINIMUM 62 1159 PM 45 1951 57 5 63
AVERAGE 77 68 9 77
PRECIPITATION (IN)
YESTERDAY 0.00 0.93 1995 0.03 -0.03 0.00
MONTH TO DATE 0.04 0.44 -0.40 0.03
SINCE OCT 1 29.04 37.20 -8.16 45.21
SINCE JAN 1 14.15 21.26 -7.11 25.11
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 10 -10 2
SINCE JUN 1 114 159 -45 159
SINCE JUL 1 2 41 -39 19
COOLING
YESTERDAY 12 3 9 12
MONTH TO DATE 135 64 71 81
SINCE JUN 1 283 189 94 258
SINCE JAN 1 318 199 119 258
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WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 75 1100 PM
LOWEST 31 300 PM
AVERAGE 53
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 88 1991
MINIMUM TEMPERATURE (F) 57 47 1951
SUNRISE AND SUNSET
AUGUST 18 2023........SUNRISE 609 AM PDT SUNSET 816 PM PDT
AUGUST 19 2023........SUNRISE 611 AM PDT SUNSET 814 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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