Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KSEW 050839
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
139 AM PDT FRI SEP 05 2025
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 4 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 79 145 PM 88 2017 75 4 78
MINIMUM 58 546 AM 42 1952 56 2 56
AVERAGE 69 65 4 67
PRECIPITATION (IN)
YESTERDAY 0.00 0.97 1945 0.05 -0.05 0.00
MONTH TO DATE 0.00 0.17 -0.17 T
SINCE OCT 1 28.91 37.90 -8.99 35.31
SINCE JAN 1 15.51 21.96 -6.45 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 8 -8 0
SINCE SEP 1 0 8 -8 0
SINCE JUL 1 24 63 -39 38
COOLING
YESTERDAY 4 2 2 2
MONTH TO DATE 15 8 7 10
SINCE SEP 1 15 8 7 10
SINCE JAN 1 309 241 68 283
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION NW (330)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 4.8
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 700 AM
LOWEST 50 400 PM
AVERAGE 73
..........................................................
THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 90 2024
MINIMUM TEMPERATURE (F) 55 42 1947
SUNRISE AND SUNSET
SEPTEMBER 5 2025.....SUNRISE 634 AM PDT SUNSET 741 PM PDT
SEPTEMBER 6 2025.....SUNRISE 635 AM PDT SUNSET 739 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$