Clear Lake Weather Forecast

    • 68
    • 83

    Increasing Clouds

    • 62
    • 79

    Rain Showers

    • 50
    • 76

    Mostly Sunny

    • 58
    • 78

    Partly Sunny

    • 60
    • 80

    Partly Sunny

    • 57
    • 78

    Mostly Cloudy

Today 8 Sep Allegan

Mostly sunny in the morning then becoming partly sunny. Highs in the lower 80s. Southeast Winds 5 to 10 Mph becoming south in the afternoon.

Tonight 8 Sep Allegan

Partly cloudy. A 20 percent chance of Showers after midnight. Lows in the upper 60s. South Winds around 10 Mph. Gusts up to 20 Mph after midnight.

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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 5 September, 2026

    68 °F

  • Average September

    78.6 °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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