Osterhout Lake Weather Forecast

    • 59
    • 71

    Rain Showers

    • 48
    • 70

    Rain Showers Likely

    • 45
    • 64

    Mostly Cloudy

    • 46
    • 64

    Mostly Cloudy

    • 47
    • 65

    Slight Chance Rain Showers

    • 48
    • 68

    Mostly Cloudy

Today 19 Sep Allegan

Rain Showers and a chance of Thunderstorms. Patchy fog. Some Thunderstorms may produce heavy rainfall. Highs in the upper 60s. Southeast Winds 5 to 10 Mph with Gusts to around 20 Mph. Chance of rain 100 percent.

Tonight 19 Sep Allegan

Showers and a chance of Thunderstorms. Patchy fog. Some Thunderstorms may produce heavy rainfall. Lows in the upper 50s. Southeast Winds around 10 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Osterhout Lake Temperature Statistics

September Temperature

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

  • Lowest 14 September, 2026

    48.2 °F

  • Average September

    71.5 °F

  • Highest 2 September, 2026

    93.2 °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

    59.5 °F
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