North St Marys Weather Forecast

    • 17
    • 38

    Sunny

    • 22
    • 41

    Possible shower or storm

    • 21
    • 37

    Shower or two. Possible storm

    • 21
    • 39

    Showers. Storm developing

    • 24
    • 35

    Shower or two

    • 19
    • 32

    Shower or two

    • 18
    • 34

    Partly cloudy

Today 18 Dec Sydney

Sunny. The chance of fog in the outer west in the early morning. Winds north to northeasterly 15 to 25 km/h tending east to northeasterly 20 to 30 km/h in the early afternoon then tending north to northeasterly 15 to 25 km/h in the 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

    22.4 °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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