Charleston Weather Forecast
- 11
- 22
Partly cloudy
- 8
- 22
Partly cloudy
- 9
- 20
Cloud clearing
- 8
- 25
Sunny
- 13
- 31
Sunny
- 16
- 35
Sunny
- 19
- 36
Sunny
Today 23 Dec Mount Barker
Partly cloudy. Winds southwesterly 15 to 20 km/h tending southerly in the late afternoon then becoming light in the late evening.
Charleston Temperature Statistics View More
December Temperature
Mount Barker (18km)
Lowest 7 December, 2025
5.6 °CAverage December
17.9 °CHighest 18 December, 2025
38 °C
Climate (2020–Present)
Mount Barker (18km)
Average Low 2020–2025
9.3 °CAverage 2020–2025
13.9 °CAverage High 2020–2025
21 °C