Dewey Lake Weather Forecast

    • 63
    • 83

    Mostly Sunny

    • 63
    • 82

    Rain Showers

    • 59
    • 77

    Rain Showers Likely

    • 60
    • 82

    Partly Sunny

    • 66
    • 84

    Slight Chance Thunderstorms

    • 66
    • 85

    Chance Rain Showers

Today 4 Aug Cass

Partly cloudy this Morning, then clearing. Highs in the lower 80s. South Winds around 5 Mph.

Tonight 4 Aug Cass

Mostly clear. Lows in the lower 60s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dewey Lake Temperature Statistics

August Temperature

Southwest Michigan Regional Airport (12.4 miles)

  • Lowest 2 August, 2026

    64 °F

  • Average August

    70.2 °F

  • Highest 1 August, 2026

    75.7 °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

    52.1 °F

  • Average High 2021–2026

    60.8 °F
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