Osterhout Lake Weather Forecast

    • 43
    • 78

    Increasing Clouds

    • 36
    • 54

    Rain Showers

    • 29
    • 46

    Mostly Sunny

    • 41
    • 53

    Partly Sunny

    • 46
    • 67

    Partly Sunny

    • 46
    • 66

    Mostly Sunny

Today 17 Apr Allegan

Partly sunny. Widespread dense fog in the morning. Highs in the upper 70s. Light Winds becoming south 5 to 15 Mph in the afternoon.

Tonight 17 Apr Allegan

Rain Showers and a chance of Thunderstorms. Lows in the lower 40s. South Winds 10 to 15 Mph with Gusts to around 30 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Osterhout Lake Temperature Statistics

April Temperature

South Haven, South Haven Area Regional Airport (12.4 miles)

  • Lowest 7 April, 2026

    23 °F

  • Average April

    49 °F

  • Highest 12 April, 2026

    80.6 °F

Climate (2021–Present)

South Haven, South Haven Area Regional Airport (12.4 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    59.4 °F
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