Dewey Lake Weather Forecast

    • 57
    • 79

    Increasing Clouds

    • 63
    • 81

    Rain Showers Likely

    • 56
    • 79

    Mostly Sunny

    • 57
    • 80

    Mostly Sunny

    • 63
    • 81

    Mostly Cloudy

    • 68
    • 84

    Chance Rain Showers

Today 25 Aug Cass

Mostly sunny. Highs in the upper 70s. Southwest Winds around 5 Mph.

Tonight 25 Aug Cass

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. 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 9 August, 2026

    55.7 °F

  • Average August

    71.9 °F

  • Highest 7 August, 2026

    87.7 °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 °F

  • Average High 2021–2026

    60.7 °F
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