697
CDUS46 KSEW 190847
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
147 AM PDT TUE SEP 19 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 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 67 255 PM 85 1991 71 -4 74
MINIMUM 54 526 AM 38 1947 53 1 55
AVERAGE 61 62 -1 65
PRECIPITATION (IN)
YESTERDAY 0.11 0.81 2021 0.05 0.06 T
MONTH TO DATE 0.29 0.85 -0.56 0.22
SINCE OCT 1 29.56 38.58 -9.02 45.45
SINCE JAN 1 14.67 22.64 -7.97 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 4 4 0 0
MONTH TO DATE 25 43 -18 14
SINCE SEP 1 25 43 -18 14
SINCE JUL 1 37 98 -61 34
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 26 27 -1 29
SINCE SEP 1 26 27 -1 29
SINCE JAN 1 378 260 118 373
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WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION NE (40)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 8.8
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 300 AM
LOWEST 43 300 PM
AVERAGE 68
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 82 1999
MINIMUM TEMPERATURE (F) 53 40 1947
1957
SUNRISE AND SUNSET
SEPTEMBER 19 2023.....SUNRISE 652 AM PDT SUNSET 713 PM PDT
SEPTEMBER 20 2023.....SUNRISE 653 AM PDT SUNSET 711 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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