Osterhout Lake Weather Forecast

    • 25
    • 39

    Decreasing Clouds

    • 36
    • 43

    Partly Sunny

    • 43
    • 57

    Mostly Cloudy

    • 53
    • 64

    Mostly Cloudy

    • 49
    • 69

    Rain Showers Likely

    • 44
    • 62

    Chance Rain Showers

Today 27 Mar Allegan

Partly sunny in the morning then clearing. Highs in the upper 30s. Northeast Winds 5 to 10 Mph becoming northwest in the afternoon. Gusts up to 20 Mph.

Tonight 27 Mar Allegan

Partly cloudy. Lows in the mid 20s. Northwest Winds around 10 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Osterhout Lake Temperature Statistics

March Temperature

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

  • Lowest 1 March, 2026

    17.6 °F

  • Average March

    41.7 °F

  • Highest 9 March, 2026

    75.2 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    59.4 °F
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