| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in Seattle/ Tacoma, Wa in September is very mild at 15.9 °C (60.62 °F).
- Afternoons can be warm with average high temperatures reaching 20.7 °C (69.3 °F).
- Overnight temperatures are generally quite mild with an average low of 11.1 °C (52 °F).
- The range/ variation of daily average temperatures in September is 9.6 °C (17.3 °F).
- The weather in September is a little parched. A mere 47.8mm (1.9in) of H2O is dropped.
- The shortest day is 11:39 long and the longest day is 13:20 long with an average length of 12:30.
Check the distance to and compare the Seattle/ Tacoma, Wa September averages with somewhere beginning with:
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Weather Trend Graph for September in Seattle/ Tacoma, Wa, Usa
Navigate to September Weather in Locations Surrounding Seattle/ Tacoma, Wa:
- Abbotsford, Bc, Canada - 175.2 kms (108.9 miles) N
- Blaine, Wa, Usa - 174.8 kms (108.6 miles) N
- Gladman Point, Nt, Canada - 185.5 kms (115.3 miles) NW
- Victoria (Airport), Bc, Canada - 157.2 kms (97.7 miles) NNW
- Victoria (Marine), Bc, Canada - 148.8 kms (92.5 miles) NW
- Port Angeles, Wa, Usa - 80.5 kms (50 miles) NW
- Port Townsend, Wa, Usa - 80.5 kms (50 miles) NW
- Seattle, Washington, Usa - 17.5 kms (10.9 miles) N
- Centralia, Wa, Usa - 72.8 kms (45.2 miles) SW
- Aberdeen, Wa, Usa - 126.1 kms (78.3 miles) WSW
- Olympia, Wa, Usa - 70.3 kms (43.7 miles) SW
- Astoria/ Clatsop, Or, Usa - 188.2 kms (116.9 miles) SW