Big Sandy Lake Weather Forecast

    • 45
    • 70

    Decreasing Clouds

    • 23
    • 60

    Chance Rain Showers

    • 22
    • 43

    Mostly Sunny

    • 33
    • 52

    Partly Sunny

    • 42
    • 64

    Partly Sunny

    • 43
    • 71

    Chance Rain Showers

Today 25 Mar Monroe

Mostly sunny. Much warmer with Highs in the upper 60s. Southwest Winds 10 to 15 Mph.

Tonight 25 Mar Monroe

Partly cloudy. Warmer with Lows in the mid 40s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sandy Lake Temperature Statistics

March Temperature

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

  • Lowest 2 March, 2026

    7.7 °F

  • Average March

    38.4 °F

  • Highest 21 March, 2026

    82.2 °F

Climate (2021–Present)

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

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  • Average Low 2021–2026

    34.8 °F

  • Average 2021–2026

    47.5 °F

  • Average High 2021–2026

    58.2 °F
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