Dewey Lake Weather Forecast

    • 20
    • 29

    Increasing Clouds

    • 34
    • 40

    Cloudy

    • 27
    • 43

    Mostly Cloudy

    • 37
    • 44

    Rain

    • 36
    • 54

    Chance Rain

    • 31
    • 47

    Slight Chance Rain

Today 21 Dec Cass

Partly cloudy early this Morning, then clearing. Highs around 30. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 21 Dec Cass

Clear in the Evening, then becoming partly cloudy. Cold with Lows around 20. South Winds around 5 Mph.

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Dewey Lake Temperature Statistics

December Temperature

Southwest Michigan Regional Airport (12.4 miles)

  • Lowest 8 December, 2025

    3 °F

  • Average December

    26.4 °F

  • Highest 18 December, 2025

    51.1 °F

Climate (2020–Present)

Southwest Michigan Regional Airport (12.4 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    60.6 °F
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