Grahamstown Lake Weather Forecast

    • 13
    • 27

    Sunny

    • 13
    • 27

    Partly cloudy

    • 17
    • 25

    Possible shower

    • 17
    • 25

    Cloudy

    • 17
    • 29

    Partly cloudy

    • 18
    • 30

    Shower or two

    • 19
    • 33

    Shower or two

Today 30 Dec Hunter

Sunny. The chance of fog about the Upper Hunter in the early morning. Light winds becoming east to southeasterly 15 to 20 km/h in the early afternoon then becoming light in the late evening. Overnight temperatures falling to between 7 and 12 with daytime temperatures reaching 26 to 33.

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Grahamstown Lake Temperature Statistics View More

December Temperature

Williamtown RAAF Base (5km)

  • Lowest 2 December, 2025

    11.3 °C

  • Average December

    22.9 °C

  • Highest 21 December, 2025

    42.6 °C

Climate (2020–Present)

Williamtown RAAF Base (5km)

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  • Average Low 2020–2025

    13.3 °C

  • Average 2020–2025

    18 °C

  • Average High 2020–2025

    23.8 °C
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