Merino Weather Forecast

    • 10
    • 19

    Shower or two

    • 6
    • 19

    Partly cloudy

    • 8
    • 23

    Partly cloudy

    • 11
    • 22

    Partly cloudy

    • 7
    • 22

    Partly cloudy

    • 7
    • 23

    Mostly sunny

    • 8
    • 31

    Sunny

Today 6 Dec South West

Cloudy. High chance of showers, most likely in the morning and afternoon. The chance of a thunderstorm in the morning and early afternoon. Light winds becoming northwesterly 20 to 30 km/h in the morning then tending westerly 25 to 40 km/h in the middle of the day. Overnight temperatures falling to around 10 with daytime temperatures reaching between 19 and 22.

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Merino Temperature Statistics View More

December Temperature

Casterton (24km)

  • Lowest 3 December, 2025

    6.6 °C

  • Average December

    15 °C

  • Highest 4 December, 2025

    29.6 °C

Climate (2020–Present)

Casterton (24km)

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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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