Old St Mellons Weather Forecast

    • 14
    • 19

    Cloudy

    • 13
    • 18

    Partly cloudy

    • 13
    • 18

    Cloudy

    • 16
    • 19

    Cloudy

    • 14
    • 20

    Partly cloudy

    • 16
    • 19

    Cloudy

Today 7 Sep Wales

Any lingering rain quickly clearing, with bright or sunny spells developing throughout the morning. Staying dry with sunny spells throughout the afternoon. Feeling fresher with temperatures nearer to average. Maximum temperature 20 °C.

Graph Plots Open in Graphs

  • Temperature Forecast Met Office

  • Temperature Real-Time

Old St Mellons Temperature Statistics

September Temperature

St-athan (26km)

  • Lowest 5 September, 2026

    12.6 °C

  • Average September

    17 °C

  • Highest 3 September, 2026

    21 °C

Climate (2021–2026)

St-athan (26km)

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

  • Average Low 2021–2026

    9.1 °C

  • Average 2021–2026

    12 °C

  • Average High 2021–2026

    14.8 °C
Get WillyWeather+ to remove ads