Sparta/Fort McCoy Airport Weather Forecast

    • 18
    • 26

    Snow

    • -2
    • 26

    Snow Likely

    • 5
    • 16

    Mostly Cloudy

    • 2
    • 19

    Partly Sunny

    • 9
    • 21

    Partly Sunny

    • 16
    • 29

    Mostly Cloudy

    • 13
    • 30

    Mostly Cloudy

Today 30 Dec Monroe

Snow. Snow accumulation around an inch. Highs in the mid 20s. West Winds 5 to 10 Mph. Chance of snow 90 percent.

Tonight 30 Dec Monroe

Mostly cloudy with a slight chance of freezing drizzle. A chance of snow this Evening, then a slight chance of snow after midnight. Additional snow accumulation little or no. Not as cool with Lows around 18. Northwest Winds 5 to 10 Mph. Chance of precipitation 50 percent.

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Sparta/Fort McCoy Airport Temperature Statistics

December Temperature

Sparta, Sparta / Fort McCoy Airport (0 miles)

  • Lowest 4 December, 2025

    -12.3 °F

  • Average December

    21.5 °F

  • Highest 23 December, 2025

    43.9 °F

Climate (2020–Present)

Sparta, Sparta / Fort McCoy Airport (0 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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