Casterton Weather Forecast
- 7
- 21
Partly cloudy
- 9
- 24
Partly cloudy
- 11
- 23
Mostly sunny
- 9
- 24
Partly cloudy
- 9
- 26
Mostly sunny
- 10
- 33
Mostly sunny
- 14
- 23
Shower or two
Today 7 Dec South West
Partly cloudy. Winds westerly 15 to 25 km/h becoming light in the late evening.
Casterton Temperature Statistics View More
December Temperature
Casterton (5km)
Lowest 3 December, 2025
6.6 °CAverage December
14.9 °CHighest 4 December, 2025
29.6 °C
Climate (2020–Present)
Casterton (5km)
Average Low 2020–2025
8.4 °CAverage 2020–2025
13.5 °CAverage High 2020–2025
19.6 °C