South Turtle Lake Weather Forecast

    • 53
    • 66

    Gradual Clearing

    • 48
    • 66

    Mostly Cloudy

    • 45
    • 64

    Partly Sunny

    • 47
    • 65

    Partly Sunny

    • 51
    • 66

    Mostly Cloudy

    • 52
    • 70

    Partly Sunny

Today 19 Sep West Otter Tail

Mostly cloudy. Highs in the mid 60s. Northeast Winds 5 to 15 Mph.

Tonight 19 Sep West Otter Tail

Mostly cloudy. Lows in the mid 50s. Northeast Winds 5 to 15 Mph.

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South Turtle Lake Temperature Statistics

September Temperature

Fergus Falls Municipal Airport-Einar Mickel (16.8 miles)

  • Lowest 13 September, 2026

    44.6 °F

  • Average September

    67.2 °F

  • Highest 3 September, 2026

    89.6 °F

Climate (2021–2026)

Fergus Falls Municipal Airport-Einar Mickel (16.8 miles)

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  • Average Low 2021–2026

    34.5 °F

  • Average 2021–2026

    44.1 °F

  • Average High 2021–2026

    53.6 °F
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