Old St Mellons Weather Forecast

    • 15
    • 19

    Light rain

    • 16
    • 21

    Overcast

    • 16
    • 21

    Cloudy

    • 15
    • 20

    Cloudy

    • 19
    • 25

    Cloudy

    • 17
    • 24

    Sunny day

Today 17 Jun Wales

Cloudy and misty with rain in the morning. Rain easing as the day progresses with brighter spells developing as low cloud lifts, primarily in the north. Feeling humid. Maximum temperature 21 °C.

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Old St Mellons Temperature Statistics

June Temperature

St-athan (26km)

  • Lowest 10 June, 2026

    9.7 °C

  • Average June

    14.2 °C

  • Highest 15 June, 2026

    22.5 °C

Climate (2021–2026)

St-athan (26km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    11.8 °C

  • Average High 2021–2026

    14.7 °C
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