Dewey Lake Weather Forecast

    • 65
    • 80

    Rain Showers

    • 63
    • 81

    Chance Thunderstorms

    • 61
    • 80

    Chance Rain Showers

    • 59
    • 79

    Chance Thunderstorms

    • 64
    • 77

    Rain Showers Likely

    • 62
    • 79

    Chance Rain Showers

Today 11 Aug Cass

Mostly cloudy with a chance of Thunderstorms. A chance of Showers Early, then Showers. Highs around 80. Southwest Winds around 5 Mph. Chance of rain 90 percent.

Tonight 11 Aug Cass

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the mid 60s. Southwest Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 50 percent.

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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

    55.9 °F

  • Average August

    71.8 °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

    60.8 °F
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