Osterhout Lake Weather Forecast

    • 57
    • 76

    Chance Thunderstorms

    • 52
    • 73

    Slight Chance Rain Showers

    • 52
    • 74

    Mostly Sunny

    • 59
    • 79

    Partly Sunny

    • 62
    • 80

    Chance Rain Showers

    • 59
    • 79

    Slight Chance Thunderstorms

Today 22 Aug Allegan

Partly sunny in the morning then clearing. A chance of Showers and a slight chance of Thunderstorms. Highs in the upper 70s. West Winds around 10 Mph becoming northwest in the afternoon. Gusts up to 30 Mph. Chance of rain 40 percent.

Tonight 22 Aug Allegan

Mostly clear. Lows in the upper 50s. Northwest Winds around 10 Mph. Gusts up to 30 Mph decreasing to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Osterhout Lake Temperature Statistics

August Temperature

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

  • Lowest 3 August, 2026

    57.2 °F

  • Average August

    72.6 °F

  • Highest 14 August, 2026

    86 °F

Climate (2021–2026)

South Haven, South Haven Area Regional Airport (12.4 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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