Big Sandy Lake Weather Forecast

    • 50
    • 75

    Rain Showers Likely

    • 50
    • 76

    Increasing Clouds

    • 51
    • 75

    Slight Chance Rain Showers

    • 51
    • 76

    Partly Sunny

    • 54
    • 77

    Rain Showers Likely

    • 51
    • 75

    Chance Thunderstorms

    • 52
    • 77

    Slight Chance Thunderstorms

Today 19 Jun Monroe

Showers likely with a chance of Thunderstorms. Near steady temperature in the lower 70s. West Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 19 Jun Monroe

Showers with Thunderstorms likely this Evening, then mostly clear after midnight. Lows around 50. West Winds 10 to 20 Mph, Diminishing to light Winds after midnight. Chance of rain 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sandy Lake Temperature Statistics

June Temperature

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

  • Lowest 3 June, 2026

    39.4 °F

  • Average June

    66.6 °F

  • Highest 4 June, 2026

    87.1 °F

Climate (2021–2026)

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

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  • Average Low 2021–2026

    34.9 °F

  • Average 2021–2026

    47.5 °F

  • Average High 2021–2026

    58.2 °F
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