Old St Mellons Weather Forecast

    • 9
    • 11

    Overcast

    • 7
    • 12

    Partly cloudy

    • 7
    • 16

    Sunny day

    • 6
    • 14

    Sunny day

    • 6
    • 13

    Partly cloudy

    • 5
    • 11

    Partly cloudy

    • 6
    • 11

    Sunny day

Today 16 Mar Wales

A dry start for most. Cloud soon thickening with showery rain arriving, this heaviest and most persistent in the northwest. Freshening southwesterly winds and turning windy in the northwest. Maximum temperature 11??C.

Tonight 16 Mar Wales

Cloudy skies overnight with occasional drizzly rain in places, this mostly over hills. Much milder than last night and staying frost free. Rather windy in coastal regions in the west. Minimum temperature 6??C.

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Old St Mellons Temperature Statistics

March Temperature

St-athan (26km)

  • Lowest 14 March, 2026

    2.6 °C

  • Average March

    8.6 °C

  • Highest 2 March, 2026

    13.8 °C

Climate (2021–Present)

St-athan (26km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    11.7 °C

  • Average High 2021–2026

    14.6 °C
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