249
CDUS46 KSEW 190826
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
126 AM PDT THU SEP 19 2024
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 18 2024...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2024
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 70 305 PM 85 1991 71 -1 67
MINIMUM 55 1159 PM 38 1947 53 2 54
AVERAGE 63 62 1 61
PRECIPITATION (IN)
YESTERDAY T 0.81 2021 0.05 -0.05 0.11
MONTH TO DATE 0.39 0.85 -0.46 0.29
SINCE OCT 1 35.49 38.58 -3.09 29.56
SINCE JAN 1 18.34 22.64 -4.30 14.67
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 0.3 8.1
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 2 4 -2 4
MONTH TO DATE 44 43 1 25
SINCE SEP 1 44 43 1 25
SINCE JUL 1 82 98 -16 37
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 37 27 10 26
SINCE SEP 1 37 27 10 26
SINCE JAN 1 310 260 50 378
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WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION N (350)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 300 AM
LOWEST 55 300 PM
AVERAGE 78
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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 2024.....SUNRISE 653 AM PDT SUNSET 712 PM PDT
SEPTEMBER 20 2024.....SUNRISE 654 AM PDT SUNSET 710 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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