Castlereagh Weather Forecast

    • 19
    • 33

    Clear

    • 17
    • 30

    Sunny

    • 13
    • 29

    Sunny

    • 13
    • 32

    Sunny

    • 15
    • 36

    Sunny

    • 17
    • 43

    Possible shower

    • 23
    • 37

    Mostly sunny

Today 22 Dec Sydney

Cloudy morning, clearing to a mostly sunny afternoon. Light winds becoming northeasterly 20 to 30 km/h in the middle of the day then becoming light in the late evening.

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  • Temperature Forecast Bureau of Meteorology

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Castlereagh Temperature Statistics View More

December Temperature

Penrith Lakes (5km)

  • Lowest 21 December, 2024

    15.3 °C

  • Average December

    24.1 °C

  • Highest 17 December, 2024

    41.6 °C

Climate (2019–Present)

Penrith Lakes (5km)

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  • Average Low 2019–2024

    12.4 °C

  • Average 2019–2024

    17.6 °C

  • Average High 2019–2024

    24.7 °C
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