Climatological Report (Daily)
Issued by NWS
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CDUS46 KSEW 040837
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
137 AM PDT THU SEP 04 2025
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 3 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 84 323 PM 92 1988 75 9 72
MINIMUM 59 549 AM 45 1956 56 3 59
AVERAGE 72 65 7 66
PRECIPITATION (IN)
YESTERDAY 0.00 0.91 1945 0.04 -0.04 0.00
MONTH TO DATE 0.00 0.12 -0.12 T
SINCE OCT 1 28.91 37.85 -8.94 35.31
SINCE JAN 1 15.51 21.91 -6.40 18.16
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0
MONTH TO DATE 0.0 0.0
SINCE OCT 1 2.3 0.3
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 2 -2 0
MONTH TO DATE 0 6 -6 0
SINCE SEP 1 0 6 -6 0
SINCE JUL 1 24 61 -37 38
COOLING
YESTERDAY 7 2 5 1
MONTH TO DATE 11 6 5 8
SINCE SEP 1 11 6 5 8
SINCE JAN 1 305 239 66 281
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION N (350)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 5.4
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 400 AM
LOWEST 46 400 PM
AVERAGE 70
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 88 2017
MINIMUM TEMPERATURE (F) 56 42 1952
SUNRISE AND SUNSET
SEPTEMBER 4 2025.....SUNRISE 633 AM PDT SUNSET 743 PM PDT
SEPTEMBER 5 2025.....SUNRISE 634 AM PDT SUNSET 741 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$