Williamstown Weather Forecast
- 15
- 25
Mostly sunny
- 10
- 26
Sunny
- 14
- 34
Sunny
- 23
- 42
Mostly sunny
- 20
- 37
Sunny
- 20
- 42
Sunny
- 26
- 38
Sunny
Today 21 Jan Adelaide
Partly cloudy. Winds southerly 25 to 40 km/h increasing to 30 to 45 km/h in the late evening.
Williamstown Temperature Statistics View More
January Temperature
Mount Crawford (Fire Tower) (7km)
Lowest 1 January, 2026
6.4 °CAverage January
20.1 °CHighest 8 January, 2026
40.9 °C
Climate (2021–Present)
Mount Crawford (Fire Tower) (7km)
Average Low 2021–2026
9.7 °CAverage 2021–2026
13.6 °CAverage High 2021–2026
19.1 °C