St Johns Weather Forecast

    • 5
    • 23

    Mostly clear

    • 6
    • 18

    Shower or two. Becoming windy

    • 6
    • 13

    Shower or two

    • 7
    • 16

    Showers

    • 6
    • 15

    Possible shower

    • 3
    • 16

    Partly cloudy

    • 3
    • 17

    Partly cloudy

Today 18 Sep Mount Lofty Ranges

Sunny. Winds northerly 20 to 30 km/h increasing to 35 km/h before turning northwesterly 15 to 20 km/h in the late morning and afternoon. Daytime maximum temperatures between 19 and 23.

Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

St Johns Temperature Statistics View More

September Temperature

Nuriootpa (PIRSA Research Centre) (12km)

  • Lowest 13 September, 2025

    1.9 °C

  • Average September

    11.3 °C

  • Highest 15 September, 2025

    26.2 °C

Climate (2020–Present)

Nuriootpa (PIRSA Research Centre) (12km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    9.2 °C

  • Average 2020–2025

    15 °C

  • Average High 2020–2025

    21.8 °C
Get WillyWeather+ to remove ads