976
CDUS46 KSEW 200828
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
128 AM PDT WED SEP 20 2023
...............................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 19 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 67 323 PM 82 1999 71 -4 77
MINIMUM 53 719 AM 40 1947 53 0 49
1957
AVERAGE 60 62 -2 63
PRECIPITATION (IN)
YESTERDAY T 0.79 1959 0.06 -0.06 0.00
MONTH TO DATE 0.29 0.91 -0.62 0.22
SINCE OCT 1 29.56 38.64 -9.08 45.45
SINCE JAN 1 14.67 22.70 -8.03 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 5 4 1 2
MONTH TO DATE 30 47 -17 16
SINCE SEP 1 30 47 -17 16
SINCE JUL 1 42 102 -60 36
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 26 28 -2 29
SINCE SEP 1 26 28 -2 29
SINCE JAN 1 378 261 117 373
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 8.2
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77 1000 PM
LOWEST 42 300 PM
AVERAGE 60
......................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 88 1974
MINIMUM TEMPERATURE (F) 53 40 1949
SUNRISE AND SUNSET
SEPTEMBER 20 2023.....SUNRISE 653 AM PDT SUNSET 711 PM PDT
SEPTEMBER 21 2023.....SUNRISE 654 AM PDT SUNSET 709 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page