Three Island Lake County Park Weather Forecast

    • 44
    • 72

    Increasing Clouds

    • 58
    • 66

    Rain Showers

    • 51
    • 66

    Rain Showers

    • 45
    • 71

    Partly Sunny

    • 38
    • 58

    Mostly Sunny

    • 39
    • 58

    Mostly Cloudy

    • 39
    • 59

    Mostly Cloudy

Today 27 Sep South Beltrami

Partly sunny. Highs in the mid 50s.

Tonight 27 Sep South Beltrami

Mostly clear this Evening, then mostly cloudy. Lows in the mid 40s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Island Lake County Park Temperature Statistics

September Temperature

Bemidji (10.6 miles)

  • Lowest 14 September, 2026

    34.2 °F

  • Average September

    59.8 °F

  • Highest 3 September, 2026

    83.5 °F

Climate (2021–2026)

Bemidji (10.6 miles)

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  • Average Low 2021–2026

    30.4 °F

  • Average 2021–2026

    41.1 °F

  • Average High 2021–2026

    50.8 °F
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