Greta Main Weather Forecast

    • 17
    • 29

    Shower or two

    • 17
    • 24

    Showers. Possible storm

    • 15
    • 25

    Showers. Possible storm

    • 13
    • 33

    Shower or two

    • 15
    • 35

    Partly cloudy

    • 16
    • 27

    Possible shower

    • 14
    • 24

    Cloudy

Today 10 Dec Hunter

Partly cloudy. High chance of showers near the coast, medium chance elsewhere. The chance of a thunderstorm with possible hail. Thunderstorms possibly severe with damaging winds and heavy rain which may lead to flash flooding. Winds south to southeasterly 15 to 20 km/h tending east to southeasterly 15 to 25 km/h in the middle of the day then tending south to southeasterly 15 to 20 km/h in the late evening. Daytime maximum temperatures 27 to 34.

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Greta Main Temperature Statistics View More

December Temperature

Cessnock Airport (12km)

  • Lowest 3 December, 2025

    6.5 °C

  • Average December

    22.2 °C

  • Highest 5 December, 2025

    39.7 °C

Climate (2020–Present)

Cessnock Airport (12km)

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  • Average Low 2020–2025

    11 °C

  • Average 2020–2025

    17 °C

  • Average High 2020–2025

    24.2 °C
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