Hornsby Weather Forecast

    • 19
    • 32

    Partly cloudy

    • 17
    • 32

    Sunny

    • 18
    • 23

    Shower or two clearing

    • 15
    • 21

    Cloudy

    • 14
    • 24

    Partly cloudy

    • 14
    • 25

    Partly cloudy

    • 15
    • 27

    Partly cloudy

Today 23 Dec Sydney

Partly cloudy. Winds southeasterly 25 to 40 km/h decreasing to 15 to 25 km/h in the evening then becoming east to southeasterly and light in the late evening.

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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Hornsby Temperature Statistics View More

December Temperature

Terrey Hills (12km)

  • Lowest 3 December, 2025

    11.3 °C

  • Average December

    22 °C

  • Highest 19 December, 2025

    40.2 °C

Climate (2020–Present)

Terrey Hills (12km)

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  • Average Low 2020–2025

    13.4 °C

  • Average 2020–2025

    16.9 °C

  • Average High 2020–2025

    21.8 °C
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