291
CDUS46 KSEW 180828
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PDT WED SEP 18 2024
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 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 63 1252 PM 85 1991 72 -9 70
MINIMUM 53 638 AM 41 1947 54 -1 55
AVERAGE 58 62 -4 63
PRECIPITATION (IN)
YESTERDAY T 1.49 2010 0.06 -0.06 0.00
MONTH TO DATE 0.39 0.80 -0.41 0.18
SINCE OCT 1 35.49 38.53 -3.04 29.45
SINCE JAN 1 18.34 22.59 -4.25 14.56
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 7 3 4 2
MONTH TO DATE 42 39 3 21
SINCE SEP 1 42 39 3 21
SINCE JUL 1 80 94 -14 33
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 37 26 11 26
SINCE SEP 1 37 26 11 26
SINCE JAN 1 310 259 51 378
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION S (190)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (170)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (160)
AVERAGE WIND SPEED 5.6
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 700 PM
LOWEST 72 1200 PM
AVERAGE 85
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 85 1991
MINIMUM TEMPERATURE (F) 53 38 1947
SUNRISE AND SUNSET
SEPTEMBER 18 2024.....SUNRISE 651 AM PDT SUNSET 714 PM PDT
SEPTEMBER 19 2024.....SUNRISE 653 AM PDT SUNSET 712 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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