St Marys South Weather Forecast

    • 18
    • 41

    Mostly sunny

    • 21
    • 31

    Partly cloudy

    • 19
    • 31

    Partly cloudy

    • 17
    • 36

    Sunny

    • 19
    • 31

    Partly cloudy

    • 20
    • 34

    Partly cloudy

    • 20
    • 38

    Mostly sunny

Today 25 Jan Sydney

Mostly sunny. The chance of a thunderstorm in the west in the afternoon and early evening. Winds north to northeasterly 15 to 20 km/h tending east to northeasterly 15 to 25 km/h in the early afternoon then tending north to northeasterly 15 to 20 km/h in the late evening.

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St Marys South Temperature Statistics View More

January Temperature

Horsley Park (11km)

  • Lowest 1 January, 2026

    15.4 °C

  • Average January

    22 °C

  • Highest 10 January, 2026

    41.5 °C

Climate (2021–Present)

Horsley Park (11km)

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  • Average Low 2021–2026

    12.3 °C

  • Average 2021–2026

    17.3 °C

  • Average High 2021–2026

    23.7 °C
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