Osterhout Lake Weather Forecast

    • 47
    • 64

    Increasing Clouds

    • 43
    • 65

    Slight Chance Rain Showers

    • 38
    • 59

    Mostly Sunny

    • 37
    • 56

    Mostly Sunny

    • 45
    • 61

    Rain Showers Likely

    • 44
    • 62

    Partly Sunny

Today 8 May Allegan

Mostly sunny. Highs in the mid 60s. Light Winds becoming west 5 to 10 Mph with Gusts to around 20 Mph in the afternoon.

Tonight 8 May Allegan

Partly cloudy. Lows in the upper 40s. Light Winds becoming south 5 to 10 Mph with Gusts to around 20 Mph after midnight.

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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 2 May, 2026

    33.8 °F

  • Average May

    50.9 °F

  • Highest 4 May, 2026

    77 °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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