Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KSEW 210831
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
131 AM PDT SAT SEP 21 2024
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 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 64 507 PM 88 1974 71 -7 64
MINIMUM 53 741 AM 40 1949 53 0 51
AVERAGE 59 62 -3 58
PRECIPITATION (IN)
YESTERDAY 0.02 1.05 1972 0.05 -0.03 0.41
MONTH TO DATE 0.41 0.96 -0.55 0.70
SINCE OCT 1 35.51 38.69 -3.18 29.97
SINCE JAN 1 18.36 22.75 -4.39 15.08
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 6 4 2 7
MONTH TO DATE 55 51 4 37
SINCE SEP 1 55 51 4 37
SINCE JUL 1 93 106 -13 49
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 37 29 8 26
SINCE SEP 1 37 29 8 26
SINCE JAN 1 310 262 48 378
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION S (190)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 5.0
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 400 AM
LOWEST 56 800 PM
AVERAGE 76
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 88 1952
1974
MINIMUM TEMPERATURE (F) 53 39 1955
1960
SUNRISE AND SUNSET
SEPTEMBER 21 2024.....SUNRISE 656 AM PDT SUNSET 708 PM PDT
SEPTEMBER 22 2024.....SUNRISE 657 AM PDT SUNSET 705 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$