Dewey Lake Weather Forecast

    • 69
    • 84

    Mostly Cloudy

    • 64
    • 80

    Chance Rain Showers

    • 51
    • 78

    Partly Sunny

    • 59
    • 80

    Mostly Sunny

    • 63
    • 84

    Chance Rain Showers

    • 59
    • 80

    Chance Rain Showers

    • 63
    • 80

    Chance Rain Showers

Today 8 Sep Cass

Partly cloudy. Near steady temperature in the lower 80s. South Winds around 5 Mph.

Tonight 8 Sep Cass

Partly cloudy this Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Lows in the upper 60s. South Winds 5 to 10 Mph. Gusts up to 20 Mph after midnight. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dewey Lake Temperature Statistics

September Temperature

Southwest Michigan Regional Airport (12.4 miles)

  • Lowest 6 September, 2026

    57.9 °F

  • Average September

    79 °F

  • Highest 2 September, 2026

    95.6 °F

Climate (2021–2026)

Southwest Michigan Regional Airport (12.4 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    60.8 °F
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