Round Lake Weather Forecast

    • 43
    • 70

    Increasing Clouds

    • 40
    • 70

    Partly Sunny

    • 42
    • 73

    Mostly Sunny

    • 43
    • 73

    Partly Sunny

    • 46
    • 74

    Mostly Sunny

    • 53
    • 74

    Mostly Cloudy

Today 24 Sep Clare

Sunny. Highs in the upper 60s. East Winds around 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 24 Sep Clare

Partly cloudy. Lows in the lower 40s. East Winds around 10 Mph.

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Round Lake Temperature Statistics

September Temperature

Mount Pleasant, Mount Pleasant Municipal Airport (19.9 miles)

  • Lowest 14 September, 2026

    41 °F

  • Average September

    65.8 °F

  • Highest 1 September, 2026

    91.4 °F

Climate (2021–2026)

Mount Pleasant, Mount Pleasant Municipal Airport (19.9 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    49 °F

  • Average High 2021–2026

    58.5 °F
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