Castle Hill Weather Forecast

    • 19
    • 29

    Becoming mostly sunny

    • 19
    • 30

    Mostly sunny

    • 15
    • 26

    Sunny

    • 15
    • 29

    Sunny

    • 16
    • 32

    Sunny

    • 18
    • 42

    Partly cloudy

    • 24
    • 34

    Cloud clearing

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

  • Temperature Real-Time

Castle Hill Temperature Statistics View More

December Temperature

Horsley Park (19km)

  • Lowest 21 December, 2024

    14.4 °C

  • Average December

    23.1 °C

  • Highest 17 December, 2024

    39.9 °C

Climate (2019–Present)

Horsley Park (19km)

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  • Average Low 2019–2024

    12.2 °C

  • Average 2019–2024

    17.1 °C

  • Average High 2019–2024

    23.5 °C
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