Letterloan Weather Forecast

    • 12
    • 16

    Cloudy

    • 14
    • 21

    Cloudy

    • 11
    • 18

    Light rain

    • 7
    • 14

    Partly cloudy

    • 11
    • 17

    Light rain

    • 10
    • 15

    Cloudy

    • 10
    • 16

    Partly cloudy

Today 20 Sep Northern Ireland

Windy along the coast with the chance of an odd shower in the west, bright spells. Any early showers will die as bright or sunny spells increase through the morning. The wind will ease down by the afternoon. Maximum temperature 17 °C.

Tonight 20 Sep Northern Ireland

The evening will be dry with clear spells but cloud will soon increase with rain, some heavy, following from the west from midnight. Minimum temperature 9 °C.

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Letterloan Temperature Statistics

September Temperature

Magilligan No 2 (16km)

  • Lowest 13 September, 2026

    9.1 °C

  • Average September

    14.6 °C

  • Highest 6 September, 2026

    22.4 °C

Climate (2021–2026)

Magilligan No 2 (16km)

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  • Average Low 2021–2026

    7.7 °C

  • Average 2021–2026

    10.6 °C

  • Average High 2021–2026

    13.4 °C
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