St Marys Weather Forecast

    • 8
    • 23

    Becoming windy. Sunny

    • 7
    • 15

    Mostly sunny

    • 0
    • 16

    Early frost. Partly cloudy

    • 2
    • 18

    Mostly sunny

    • 6
    • 20

    Partly cloudy

    • 10
    • 24

    Shower or two

    • 10
    • 18

    Shower or two

Today 20 Sep East Coast

Sunny day. Slight chance of a shower, most likely at night. Damaging winds possible from early afternoon. Winds west to northwesterly 25 to 35 km/h becoming northwesterly 35 to 55 km/h in the morning then turning westerly 30 to 45 km/h in the evening. Overnight temperatures falling to between 5 and 9 with daytime temperatures reaching 20 to 25.

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St Marys Temperature Statistics View More

September Temperature

St Helens Aerodrome (28km)

  • Lowest 17 September, 2026

    2.2 °C

  • Average September

    12.2 °C

  • Highest 10 September, 2026

    22.2 °C

Climate (2021–2026)

St Helens Aerodrome (28km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    13.4 °C

  • Average High 2021–2026

    18.4 °C
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