Williamstown Weather Forecast
- 9
- 24
Clear
- 14
- 23
Mostly sunny
- 8
- 15
Partly cloudy
- 5
- 19
Sunny
- 9
- 23
Sunny
- 13
- 27
Partly cloudy
- 16
- 27
Partly cloudy
Today 19 Sep Adelaide
Clear. Winds northwesterly 15 to 20 km/h becoming light in the late afternoon then becoming north to northeasterly 15 to 20 km/h in the late evening.
Williamstown Temperature Statistics View More
September Temperature
Mount Crawford (Fire Tower) (7km)
Lowest 17 September, 2026
2.8 °CAverage September
10.4 °CHighest 12 September, 2026
19.4 °C
Climate (2021–2026)
Mount Crawford (Fire Tower) (7km)
Average Low 2021–2026
9.8 °CAverage 2021–2026
13.7 °CAverage High 2021–2026
19.2 °C