Island Lake Weather Forecast

    • 43
    • 62

    Increasing Clouds

    • 46
    • 60

    Rain Showers

    • 42
    • 61

    Partly Sunny

    • 45
    • 65

    Mostly Cloudy

    • 47
    • 69

    Partly Sunny

    • 46
    • 70

    Partly Sunny

Today 13 Sep Mahnomen

Sunny. Highs in the mid 60s. Northwest Winds up to 10 Mph.

Tonight 13 Sep Mahnomen

Partly cloudy. Lows 40 to 45. West Winds around 5 Mph.

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  • Temperature Real-Time

Island Lake Temperature Statistics

September Temperature

Fosston, Fosston Municipal Airport (11.2 miles)

  • Lowest 10 September, 2026

    48.6 °F

  • Average September

    63.2 °F

  • Highest 10 September, 2026

    81.5 °F

Climate (2021–2026)

Fosston, Fosston Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    29.6 °F

  • Average 2021–2026

    39.4 °F

  • Average High 2021–2026

    48.7 °F
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