Big Sandy Lake Weather Forecast

    • -7
    • 12

    Increasing Clouds

    • -2
    • 14

    Partly Sunny

    • 4
    • 22

    Mostly Sunny

    • 13
    • 26

    Chance Snow

    • 8
    • 26

    Mostly Cloudy

    • 11
    • 27

    Chance Snow

    • 11
    • 28

    Slight Chance Snow

Today 29 Jan Monroe

Mostly sunny. Highs around 11. Northwest Winds around 5 Mph.

Tonight 29 Jan Monroe

Partly cloudy this Evening, then becoming mostly cloudy. A chance of Flurries. Cold with Lows around 6 below. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sandy Lake Temperature Statistics

January Temperature

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

  • Lowest 24 January, 2026

    -29.7 °F

  • Average January

    16.7 °F

  • Highest 13 January, 2026

    50 °F

Climate (2021–Present)

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

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  • Average Low 2021–2026

    34.6 °F

  • Average 2021–2026

    47.3 °F

  • Average High 2021–2026

    58 °F
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