Casterton Weather Forecast

    • 10
    • 27

    Mostly clear

    • 11
    • 20

    Shower or two

    • 7
    • 21

    Cloudy

    • 9
    • 24

    Partly cloudy

    • 11
    • 23

    Partly cloudy

    • 8
    • 24

    Mostly sunny

    • 8
    • 25

    Mostly sunny

Today 5 Dec South West

Mostly clear. Slight chance of a shower in the northwest later tonight. Near zero chance of rain elsewhere. Winds west to southwesterly 15 to 25 km/h.

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Casterton Temperature Statistics View More

December Temperature

Casterton (5km)

  • Lowest 3 December, 2025

    6.6 °C

  • Average December

    15.8 °C

  • Highest 3 December, 2025

    28.2 °C

Climate (2020–Present)

Casterton (5km)

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  • Average Low 2020–2025

    8.4 °C

  • Average 2020–2025

    13.5 °C

  • Average High 2020–2025

    19.6 °C
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