South Lake Weather Forecast

    • 40
    • 69

    Mostly Sunny

    • 41
    • 71

    Mostly Sunny

    • 44
    • 73

    Partly Sunny

    • 46
    • 74

    Mostly Sunny

    • 56
    • 73

    Chance Rain Showers

    • 56
    • 69

    Rain Showers Likely

Today 25 Sep Lake

Cloudy in the morning then becoming mostly sunny. Highs in the upper 60s. Light Winds.

Tonight 25 Sep Lake

Clear. Lows in the lower 40s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Lake Temperature Statistics

September Temperature

Big Rapids, Roben-Hood Airport (18 miles)

  • Lowest 14 September, 2026

    39.2 °F

  • Average September

    63.9 °F

  • Highest 1 September, 2026

    87.8 °F

Climate (2021–2026)

Big Rapids, Roben-Hood Airport (18 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    57.2 °F
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