Casterton Weather Forecast

    • 7
    • 15

    Cloudy

    • 1
    • 16

    Morning frost. Mostly sunny

    • 5
    • 14

    Cloudy

    • 4
    • 17

    Mostly sunny

    • 4
    • 19

    Sunny

    • 8
    • 21

    Sunny

    • 12
    • 23

    Shower or two

Today 7 Sep South West

Cloudy. Slight chance of a shower about the ranges in the late morning. Near zero chance of rain elsewhere. Winds southerly 20 to 30 km/h becoming light in the late evening. Daytime maximum temperatures around 14.

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Casterton Temperature Statistics View More

September Temperature

Casterton (5km)

  • Lowest 1 September, 2026

    6.7 °C

  • Average September

    11.8 °C

  • Highest 1 September, 2026

    18.7 °C

Climate (2021–2026)

Casterton (5km)

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  • Average Low 2021–2026

    8.5 °C

  • Average 2021–2026

    13.6 °C

  • Average High 2021–2026

    19.8 °C
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