Big Sandy Lake Weather Forecast

    • 66
    • 78

    Rain Showers

    • 70
    • 87

    Chance Rain Showers

    • 70
    • 90

    Chance Thunderstorms

    • 68
    • 88

    Chance Thunderstorms

    • 66
    • 88

    Chance Rain Showers

    • 66
    • 87

    Chance Rain Showers

Today 29 Aug Monroe

Showers with a slight chance of Thunderstorms in the Morning, then Showers with a chance of Thunderstorms in the afternoon. Highs in the mid 70s. South Winds 10 to 15 Mph. Chance of rain 100 percent.

Tonight 29 Aug Monroe

Mostly cloudy. Lows in the mid 60s. South Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sandy Lake Temperature Statistics

August Temperature

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

  • Lowest 20 August, 2026

    43.7 °F

  • Average August

    68.9 °F

  • Highest 11 August, 2026

    86.5 °F

Climate (2021–2026)

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

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

  • Average Low 2021–2026

    35.1 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    58.3 °F
Get WillyWeather+ to remove ads