Fort McCoy Weather Forecast

    • 1
    • 33

    Becoming Sunny

    • 14
    • 27

    Chance Snow

    • 25
    • 38

    Chance Rain/Snow

    • 21
    • 36

    Mostly Cloudy

    • 32
    • 42

    Cloudy

    • 25
    • 48

    Mostly Cloudy

Today 20 Dec Monroe

Mostly sunny. Not as cold with Highs around 30. Temperature falling into the lower 20s this afternoon. West Winds 10 to 20 Mph with Gusts up to 35 Mph.

Tonight 20 Dec Monroe

Mostly clear. Colder with Lows around 1 above. Northwest Winds 10 to 20 Mph. Gusts up to 35 Mph in the evening.

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Fort McCoy Temperature Statistics

December Temperature

Sparta, Sparta / Fort McCoy Airport (4.3 miles)

  • Lowest 4 December, 2025

    -12.3 °F

  • Average December

    17.3 °F

  • Highest 18 December, 2025

    43.5 °F

Climate (2020–Present)

Sparta, Sparta / Fort McCoy Airport (4.3 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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