Dewey Lake Weather Forecast

    • 57
    • 78

    Partly Sunny

    • 58
    • 80

    Mostly Sunny

    • 62
    • 84

    Mostly Sunny

    • 63
    • 84

    Chance Thunderstorms

    • 61
    • 80

    Chance Thunderstorms

    • 60
    • 82

    Mostly Sunny

Today 28 Jul Cass

Partly cloudy. Highs around 80. North Winds 10 to 15 Mph. Gusts up to 20 Mph, increasing to 30 Mph this afternoon.

Tonight 28 Jul Cass

Mostly clear. Lows in the upper 50s. North Winds 10 to 15 Mph. Gusts up to 30 Mph, decreasing to 20 Mph after midnight.

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Dewey Lake Temperature Statistics

July Temperature

Southwest Michigan Regional Airport (12.4 miles)

  • Lowest 23 July, 2026

    47.6 °F

  • Average July

    73.6 °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

    43.2 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    60.8 °F
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