St Marys Weather Forecast

    • 3
    • 16

    Sunny

    • 3
    • 15

    Partly cloudy

    • 5
    • 17

    Partly cloudy

    • 6
    • 15

    Mostly sunny

    • 6
    • 15

    Possible shower

    • 6
    • 14

    Shower or two

    • 5
    • 11

    Possible shower

Today 17 Jul East Coast

Mostly sunny. Areas of frost and patchy fog in the north this morning. Light winds becoming west to northwesterly 15 to 25 km/h in the middle of the day. Daytime maximum temperatures between 10 and 16.

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St Marys Temperature Statistics View More

July Temperature

St Helens Aerodrome (28km)

  • Lowest 11 July, 2026

    3.4 °C

  • Average July

    9.5 °C

  • Highest 1 July, 2026

    16.7 °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

    18.3 °C
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