Clear Lake Weather Forecast

    • 47
    • 66

    Becoming Sunny

    • 45
    • 69

    Partly Sunny

    • 44
    • 67

    Partly Sunny

    • 46
    • 68

    Partly Sunny

    • 47
    • 67

    Partly Sunny

    • 50
    • 71

    Partly Sunny

Today 23 Sep Allegan

Partly sunny. Highs in the mid 60s. East Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 23 Sep Allegan

Mostly clear. Lows in the upper 40s. East Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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  • 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

    69.9 °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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