Otter Lake Weather Forecast

    • 65
    • 81

    Mostly Cloudy

    • 57
    • 78

    Rain Showers

    • 48
    • 75

    Mostly Sunny

    • 55
    • 76

    Partly Sunny

    • 56
    • 80

    Partly Sunny

    • 53
    • 77

    Mostly Cloudy

Today 8 Sep Clare

Mostly cloudy. Highs in the upper 70s. Light Winds becoming south 5 to 10 Mph with Gusts to around 20 Mph in the afternoon.

Tonight 8 Sep Clare

A slight chance of Showers and Thunderstorms in the Evening, then Showers likely and a chance of Thunderstorms after midnight. Lows in the mid 60s. South Winds around 10 Mph. Gusts up to 20 Mph after midnight. Chance of rain 70 percent.

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Otter Lake Temperature Statistics

September Temperature

Mount Pleasant, Mount Pleasant Municipal Airport (17.4 miles)

  • Lowest 3 September, 2026

    64.4 °F

  • Average September

    73.8 °F

  • Highest 1 September, 2026

    91.4 °F

Climate (2021–2026)

Mount Pleasant, Mount Pleasant Municipal Airport (17.4 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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