Old St Mellons Weather Forecast

    • 17
    • 28

    Partly cloudy

    • 16
    • 25

    Partly cloudy

    • 15
    • 24

    Sunny day

    • 16
    • 24

    Sunny day

    • 16
    • 24

    Partly cloudy

    • 15
    • 23

    Sunny day

    • 16
    • 23

    Sunny day

Today 17 Jul Wales

Any morning cloud clearing to leave another dry and sunny day. The sunshine turning hazy at times in the afternoon. Remaining hot, though a little cooler towards the northwest. Maximum temperature 28 °C.

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Old St Mellons Temperature Statistics

July Temperature

St-athan (26km)

  • Lowest 3 July, 2026

    11.1 °C

  • Average July

    20 °C

  • Highest 10 July, 2026

    31.9 °C

Climate (2021–2026)

St-athan (26km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    11.9 °C

  • Average High 2021–2026

    14.8 °C
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