Fort McCoy Barrens State Natural Area Weather Forecast

    • 2
    • 31

    Becoming Sunny

    • 14
    • 26

    Partly Sunny

    • 26
    • 38

    Slight Chance Rain/Snow

    • 19
    • 37

    Mostly Cloudy

    • 31
    • 41

    Mostly Cloudy

    • 26
    • 46

    Mostly Cloudy

Today 20 Dec Monroe

Mostly sunny. A slight chance of freezing rain in the morning. Not as cool with Highs in the lower 30s. Temperature falling into the upper 20s in the afternoon. West Winds 10 to 15 Mph. Gusts up to 30 Mph in the afternoon. Chance of precipitation 20 percent.

Tonight 20 Dec Monroe

Partly cloudy in the Evening, then becoming clear. Much Colder with Lows around zero. Northwest Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening.

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Fort McCoy Barrens State Natural Area Temperature Statistics

December Temperature

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

  • Lowest 4 December, 2025

    -12.3 °F

  • Average December

    16.4 °F

  • Highest 16 December, 2025

    42.4 °F

Climate (2020–Present)

Sparta, Sparta / Fort McCoy Airport (2.5 miles)

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  • Average Low 2020–2025

    34.7 °F

  • Average 2020–2025

    47.4 °F

  • Average High 2020–2025

    58.1 °F
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