Clear Lake Weather Forecast

    • 54
    • 76

    Slight Chance Rain Showers

    • 55
    • 75

    Rain Showers Likely

    • 58
    • 72

    Rain Showers

    • 49
    • 69

    Slight Chance Rain Showers

    • 47
    • 65

    Chance Rain Showers

    • 51
    • 68

    Mostly Cloudy

Today 17 Sep Allegan

Mostly cloudy. A 50 percent chance of Showers in the morning. Highs in the mid 70s. Light Winds.

Tonight 17 Sep Allegan

Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

September Temperature

South Haven, South Haven Area Regional Airport (13 miles)

  • Lowest 14 September, 2026

    48.2 °F

  • Average September

    72 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

South Haven, South Haven Area Regional Airport (13 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    59.5 °F
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