Derby Lake Weather Forecast

    • 52
    • 81

    Chance Thunderstorms

    • 50
    • 74

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 57
    • 81

    Mostly Sunny

    • 63
    • 85

    Chance Rain Showers

    • 62
    • 87

    Slight Chance Thunderstorms

Today 21 Jul Montcalm

Mostly sunny with a chance of Showers and a slight chance of Thunderstorms. Highs in the lower 80s. Northwest Winds 15 to 20 Mph with Gusts to around 35 Mph. Chance of rain 40 percent.

Tonight 21 Jul Montcalm

Partly cloudy. Lows in the lower 50s. Northwest Winds 15 to 20 Mph with Gusts to around 35 Mph decreasing to 5 to 15 Mph with Gusts to around 25 Mph after midnight.

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Derby Lake Temperature Statistics

July Temperature

Alma, Gratiot Community Airport (21.7 miles)

  • Lowest 7 July, 2026

    53.6 °F

  • Average July

    75.1 °F

  • Highest 14 July, 2026

    95 °F

Climate (2021–2026)

Alma, Gratiot Community Airport (21.7 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    49.1 °F

  • Average High 2021–2026

    58.6 °F
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