Sparta Weather Forecast

    • 59
    • 69

    Rain Showers

    • 46
    • 72

    Mostly Cloudy

    • 53
    • 69

    Rain Showers Likely

    • 53
    • 74

    Chance Rain Showers

    • 56
    • 73

    Rain Showers Likely

    • 51
    • 72

    Slight Chance Rain Showers

Today 14 Sep Monroe

Patchy frost this morning. Mostly sunny this Morning, then cloudy with rain Showers likely with a slight chance of Thunderstorms this afternoon. Highs in the upper 60s. Southeast Winds 10 to 20 Mph. Gusts up to 30 Mph this afternoon. Chance of rain 70 percent.

Tonight 14 Sep Monroe

A chance of Thunderstorms. Showers. Not as cool with Lows in the upper 50s. Temperature rising into the mid 60s after midnight. South Winds 10 to 20 Mph with Gusts up to 35 Mph. Chance of rain 100 percent.

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Sparta Temperature Statistics

September Temperature

Sparta, Sparta / Fort McCoy Airport (3.7 miles)

  • Lowest 11 September, 2026

    47.1 °F

  • Average September

    72.5 °F

  • Highest 1 September, 2026

    91 °F

Climate (2021–2026)

Sparta, Sparta / Fort McCoy Airport (3.7 miles)

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  • Average Low 2021–2026

    35.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    58.5 °F
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