Sandy Lake Weather Forecast

    • 68
    • 91

    Decreasing Clouds

    • 68
    • 91

    Chance Rain Showers

    • 66
    • 89

    Chance Thunderstorms

    • 68
    • 87

    Chance Thunderstorms

    • 67
    • 88

    Slight Chance Thunderstorms

    • 64
    • 85

    Partly Sunny

    • 62
    • 84

    Partly Sunny

Today 31 Aug Monroe

Partly sunny with a 20 percent chance of Showers. Hot with Highs around 90. Southwest Winds 5 to 10 Mph.

Tonight 31 Aug Monroe

Partly cloudy. Patchy fog after midnight. Lows in the upper 60s. Southwest Winds around 5 Mph this Evening, becoming light and variable. Heat index Values in the mid 90s early this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sandy Lake Temperature Statistics

August Temperature

Sparta, Sparta / Fort McCoy Airport (0.6 miles)

  • Lowest 20 August, 2026

    43.7 °F

  • Average August

    68.6 °F

  • Highest 11 August, 2026

    86.5 °F

Climate (2021–2026)

Sparta, Sparta / Fort McCoy Airport (0.6 miles)

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  • Average Low 2021–2026

    35.1 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    58.4 °F
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