St Marys Weather Forecast

    • 13
    • 29

    Mostly clear

    • 15
    • 27

    Shower or two

    • 9
    • 17

    Shower or two

    • 10
    • 18

    Showers

    • 11
    • 25

    Possible shower

    • 11
    • 30

    Possible shower

    • 15
    • 31

    Partly cloudy

Today 26 Oct Sydney

Partly cloudy. Slight chance of a shower. Winds north to northwesterly 15 to 20 km/h becoming light in the evening.

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St Marys Temperature Statistics View More

October Temperature

Penrith Lakes (10km)

  • Lowest 3 October, 2025

    7.2 °C

  • Average October

    20.7 °C

  • Highest 22 October, 2025

    39.5 °C

Climate (2020–Present)

Penrith Lakes (10km)

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  • Average Low 2020–2025

    12.5 °C

  • Average 2020–2025

    17.7 °C

  • Average High 2020–2025

    24.7 °C
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