Osterhout Lake Weather Forecast

    • 56
    • 77

    Slight Chance Thunderstorms

    • 66
    • 82

    Rain Showers

    • 64
    • 82

    Rain Showers

    • 59
    • 79

    Rain Showers Likely

    • 57
    • 78

    Slight Chance Thunderstorms

    • 53
    • 76

    Partly Sunny

Today 8 Aug Allegan

Patchy fog in the morning. Partly sunny with a chance of Showers and a slight chance of Thunderstorms in the Morning, then sunny in the afternoon. Highs in the upper 70s. West Winds 5 to 15 Mph with Gusts to around 25 Mph. Chance of rain 30 percent.

Tonight 8 Aug Allegan

Clear in the evening then becoming partly cloudy. Lows in the upper 50s. Light Winds.

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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

    71.6 °F

  • Highest 4 August, 2026

    84.2 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    59.6 °F
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