Calstock Weather Forecast

    • 6
    • 19

    Partly cloudy

    • 11
    • 18

    Cloudy

    • 9
    • 18

    Heavy rain

    • 13
    • 17

    Sunny day

    • 16
    • 20

    Light rain

    • 13
    • 18

    Light rain shower

    • 11
    • 17

    Light rain shower

Today 25 Sep South West England

Early fog patches gradually clearing to leave some brightness in eastern counties. Showery rain soon arriving in west Cornwall, with the odd spot developing elsewhere through the afternoon. Cooler. Maximum temperature 21 °C.

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Calstock Temperature Statistics

September Temperature

Mount Batten (17km)

  • Lowest 12 September, 2026

    10.8 °C

  • Average September

    16.5 °C

  • Highest 6 September, 2026

    23.6 °C

Climate (2021–2026)

Mount Batten (17km)

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  • Average Low 2021–2026

    9.2 °C

  • Average 2021–2026

    12.2 °C

  • Average High 2021–2026

    15.3 °C
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