Sis Lake Weather Forecast

    • 39
    • 53

    Rain Showers

    • 38
    • 50

    Rain Showers

    • 33
    • 49

    Rain Showers Likely

    • 33
    • 53

    Slight Chance Rain Showers

    • 38
    • 57

    Mostly Cloudy

    • 41
    • 59

    Chance Rain Showers

Today 21 Oct Newaygo

A chance of rain Showers in the Morning, then rain Showers likely and a slight chance of Thunderstorms in the afternoon. Highs in the lower 50s. West Winds 10 to 15 Mph with Gusts to around 35 Mph. Chance of rain 70 percent.

Tonight 21 Oct Newaygo

Rain Showers. Lows around 40. West Winds 5 to 15 Mph. Gusts up to 35 Mph decreasing to 20 Mph after midnight. Chance of rain 100 percent.

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Sis Lake Temperature Statistics

October Temperature

Big Rapids, Roben-Hood Airport (17.4 miles)

  • Lowest 9 October, 2025

    28.4 °F

  • Average October

    55.9 °F

  • Highest 4 October, 2025

    86 °F

Climate (2020–Present)

Big Rapids, Roben-Hood Airport (17.4 miles)

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  • Average Low 2020–2025

    38.5 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    57.2 °F
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