Osterhout Lake Weather Forecast

    • 15
    • 29

    Chance Snow Showers

    • 14
    • 29

    Snow Showers

    • 11
    • 19

    Snow Showers

    • 8
    • 23

    Chance Snow Showers

    • 17
    • 26

    Chance Snow Showers

    • 23
    • 32

    Chance Freezing Rain

Today 11 Dec Allegan

Mostly cloudy. A chance of Flurries through the day. Highs in the upper 20s. West Winds 5 to 10 Mph. Gusts up to 20 Mph in the morning.

Tonight 11 Dec Allegan

Cloudy with a 20 percent chance of snow Showers. Lows near 15. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Osterhout Lake Temperature Statistics

December Temperature

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

  • Lowest 8 December, 2025

    -2.2 °F

  • Average December

    24.5 °F

  • Highest 6 December, 2025

    35.6 °F

Climate (2020–Present)

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

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

  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    51.2 °F

  • Average High 2020–2025

    59.3 °F
Get WillyWeather+ to remove ads