Clear Lake Weather Forecast

    • 56
    • 80

    Mostly Sunny

    • 62
    • 79

    Rain Showers Likely

    • 56
    • 76

    Slight Chance Rain Showers

    • 52
    • 74

    Mostly Sunny

    • 55
    • 75

    Partly Sunny

    • 60
    • 79

    Chance Rain Showers

Today 20 Aug Allegan

Sunny. Highs around 80. Light Winds becoming northeast 5 to 10 Mph in the afternoon.

Tonight 20 Aug Allegan

Mostly clear. Lows in the upper 50s. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

August Temperature

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

  • Lowest 3 August, 2026

    57.2 °F

  • Average August

    72.7 °F

  • Highest 14 August, 2026

    86 °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

    59.6 °F
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