Osterhout Lake Weather Forecast

    • 67
    • 81

    Increasing Clouds

    • 70
    • 84

    Slight Chance Thunderstorms

    • 74
    • 87

    Slight Chance Thunderstorms

    • 72
    • 87

    Slight Chance Thunderstorms

    • 68
    • 87

    Partly Sunny

    • 67
    • 85

    Chance Rain Showers

Today 29 Aug Allegan

Mostly sunny in the morning then becoming mostly cloudy. Highs in the lower 80s. Southwest Winds 5 to 10 Mph with Gusts to around 20 Mph.

Tonight 29 Aug Allegan

Mostly cloudy with a 20 percent chance of Showers. Lows in the upper 60s. South Winds around 10 Mph. Gusts up to 20 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Osterhout Lake Temperature Statistics

August Temperature

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

  • Lowest 24 August, 2026

    50 °F

  • Average August

    71.1 °F

  • Highest 14 August, 2026

    86 °F

Climate (2021–2026)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    59.5 °F
Get WillyWeather+ to remove ads