Round Lake Weather Forecast

    • 52
    • 76

    Becoming Sunny

    • 58
    • 78

    Mostly Sunny

    • 60
    • 79

    Partly Sunny

    • 60
    • 77

    Slight Chance Thunderstorms

    • 65
    • 81

    Rain Showers Likely

    • 55
    • 76

    Slight Chance Rain Showers

Today 10 Sep Ottawa

Partly sunny. Highs in the mid 70s. Light Winds becoming northwest 5 to 10 Mph with Gusts to around 20 Mph in the afternoon.

Tonight 10 Sep Ottawa

Clear. Lows in the lower 50s. Light Winds.

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  • Temperature Real-Time

Round Lake Temperature Statistics

September Temperature

Grand Rapids, Gerald R. Ford International Airport (14.3 miles)

  • Lowest 6 September, 2026

    55.7 °F

  • Average September

    73.4 °F

  • Highest 2 September, 2026

    92.6 °F

Climate (2021–2026)

Grand Rapids, Gerald R. Ford International Airport (14.3 miles)

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  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    50.8 °F

  • Average High 2021–2026

    59.7 °F
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