Harrismith Airport Weather Forecast

    • 24
    • 31

    Partly cloudy

    • 10
    • 26

    Partly cloudy

    • 11
    • 30

    Sunny

    • 12
    • 28

    Partly cloudy

    • 12
    • 29

    Partly cloudy

    • 12
    • 32

    Sunny

    • 16
    • 36

    Partly cloudy

Today 26 Dec Great Southern

Partly cloudy. The chance of a thunderstorm with little or no rainfall in the morning and afternoon. Thunderstorms possibly severe with damaging winds in the northeast in the afternoon. Winds west to northwesterly 25 to 35 km/h turning southwesterly 25 to 40 km/h in the afternoon then decreasing to 20 to 30 km/h in the evening. Daytime maximum temperatures 26 to 38.

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  • Temperature Forecast Bureau of Meteorology

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Harrismith Airport Temperature Statistics View More

December Temperature

Lake Grace (58km)

  • Lowest 21 December, 2025

    8.5 °C

  • Average December

    22 °C

  • Highest 16 December, 2025

    41.8 °C

Climate (2020–Present)

Lake Grace (58km)

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  • Average Low 2020–2025

    10.4 °C

  • Average 2020–2025

    16.5 °C

  • Average High 2020–2025

    23.9 °C
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