Dewey Lake Weather Forecast

    • 71
    • 92

    Mostly Sunny

    • 68
    • 91

    Mostly Sunny

    • 70
    • 92

    Mostly Sunny

    • 70
    • 92

    Chance Thunderstorms

    • 67
    • 88

    Chance Thunderstorms

    • 64
    • 84

    Chance Thunderstorms

Today 14 Jul Cass

Sunny, hot with Highs in the lower 90s. West Winds 5 to 10 Mph. Heat index Values up to 100.

Tonight 14 Jul Cass

Clear. Lows in the lower 70s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dewey Lake Temperature Statistics

July Temperature

Southwest Michigan Regional Airport (12.4 miles)

  • Lowest 8 July, 2026

    55.7 °F

  • Average July

    75.2 °F

  • Highest 1 July, 2026

    92.6 °F

Climate (2021–2026)

Southwest Michigan Regional Airport (12.4 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    60.8 °F
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