North St Marys Weather Forecast

    • 16
    • 31

    Shower or two. Possible storm

    • 18
    • 34

    Shower or two

    • 17
    • 23

    Shower or two

    • 15
    • 22

    Possible shower

    • 15
    • 27

    Partly cloudy

    • 14
    • 33

    Sunny

    • 16
    • 37

    Possible shower developing

Today 13 Dec Sydney

Partly cloudy. Medium chance of showers, most likely in the evening. The chance of a thunderstorm, possibly severe with heavy rain which may lead to flash flooding in the outer west. Winds east to northeasterly 15 to 25 km/h becoming light in the late evening.

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North St Marys Temperature Statistics View More

December Temperature

Penrith Lakes (10km)

  • Lowest 1 December, 2025

    11.3 °C

  • Average December

    22.9 °C

  • Highest 6 December, 2025

    41.7 °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

    24.8 °C
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