Casterton Weather Forecast
- 3
- 19
Mostly sunny
- 9
- 19
Showers increasing
- 8
- 15
Shower or two
- 10
- 16
Showers easing
- 7
- 17
Showers
- 9
- 15
Showers
- 6
- 16
Shower or two
Today 31 Aug South West
Cloud clearing. Light winds becoming northerly 15 to 20 km/h in the late evening. Daytime maximum temperatures between 16 and 19.
Casterton Temperature Statistics View More
August Temperature
Casterton (5km)
Lowest 1 August, 2026
-1.3 °CAverage August
10 °CHighest 17 August, 2026
17.7 °C
Climate (2021–2026)
Casterton (5km)
Average Low 2021–2026
8.5 °CAverage 2021–2026
13.6 °CAverage High 2021–2026
19.8 °C