Letterloan Weather Forecast

    • 7
    • 15

    Sunny day

    • 10
    • 16

    Cloudy

    • 14
    • 17

    Cloudy

    • 10
    • 18

    Light rain shower

    • 11
    • 15

    Partly cloudy

    • 10
    • 16

    Cloudy

    • 10
    • 16

    Cloudy

Today 27 Sep Northern Ireland

This morning will be cloudy with widespread rain, heavy at times, Drier and brighter weather with the odd shower will spread from the west this afternoon. Strong southeasterly winds along exposed parts of the east coast. Maximum temperature 15 °C.

Tonight 27 Sep Northern Ireland

Mainly dry this evening with just the odd light shower. Then the rest of the night will be largely dry with some lengthy clear periods. Minimum temperature 8 °C.

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Letterloan Temperature Statistics

September Temperature

Magilligan No 2 (16km)

  • Lowest 23 September, 2026

    7.7 °C

  • Average September

    14.5 °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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