Hornsby Weather Forecast

    • 8
    • 15

    Showers

    • 9
    • 15

    Rain

    • 11
    • 15

    Rain

    • 11
    • 18

    Showers

    • 10
    • 20

    Shower or two

    • 9
    • 20

    Partly cloudy

    • 9
    • 19

    Mostly sunny

Today 19 Aug Sydney

Cloudy. Very high chance of showers. The chance of a thunderstorm. Winds south to southwesterly 15 to 20 km/h tending south to southeasterly in the middle of the day then becoming light in the late afternoon.

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  • Temperature Forecast Bureau of Meteorology

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Hornsby Temperature Statistics View More

August Temperature

Terrey Hills (12km)

  • Lowest 18 August, 2025

    5.1 °C

  • Average August

    11.7 °C

  • Highest 5 August, 2025

    20.6 °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

    21.7 °C
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