Osterhout Lake Weather Forecast

    • 54
    • 73

    Rain Showers Likely

    • 52
    • 69

    Chance Rain Showers

    • 53
    • 74

    Chance Rain Showers

    • 57
    • 81

    Partly Sunny

    • 61
    • 85

    Slight Chance Thunderstorms

    • 61
    • 86

    Chance Rain Showers

Today 22 May Allegan

Partly sunny. Highs in the lower 70s. East Winds 5 to 15 Mph with Gusts to around 30 Mph.

Tonight 22 May Allegan

Rain Showers likely after midnight. Lows in the lower 50s. East Winds 10 to 15 Mph with Gusts to around 30 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Osterhout Lake Temperature Statistics

May Temperature

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

  • Lowest 12 May, 2026

    32 °F

  • Average May

    55.6 °F

  • Highest 17 May, 2026

    86 °F

Climate (2021–Present)

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

    59.5 °F
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