Clear Lake Weather Forecast

    • 57
    • 83

    Becoming Sunny

    • 52
    • 78

    Sunny

    • 54
    • 77

    Mostly Sunny

    • 49
    • 78

    Mostly Sunny

    • 51
    • 76

    Mostly Sunny

    • 53
    • 77

    Mostly Sunny

Today 27 May Allegan

Mostly sunny. Highs in the upper 70s near lake Michigan in the mid 80s inland. Light Winds becoming northwest 10 Mph in the afternoon.

Tonight 27 May Allegan

Mostly clear. A 20 percent chance of rain Showers in the evening. Lows in the mid 50s. North Winds around 10 Mph becoming northeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

May Temperature

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

  • Lowest 12 May, 2026

    32 °F

  • Average May

    56.5 °F

  • Highest 17 May, 2026

    86 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    59.5 °F
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