Sparta/Fort McCoy Airport Weather Forecast

    • 35
    • 70

    Becoming Sunny

    • 58
    • 69

    Rain Showers

    • 47
    • 73

    Mostly Cloudy

    • 55
    • 70

    Rain Showers Likely

    • 53
    • 74

    Chance Rain Showers

    • 55
    • 71

    Chance Rain Showers

    • 51
    • 74

    Partly Sunny

Today 13 Sep Monroe

Mostly sunny. Highs in the upper 60s. West Winds 5 to 10 Mph.

Tonight 13 Sep Monroe

Clear. Patchy frost after midnight. Lows in the upper 30s. Northwest Winds 5 to 10 Mph, becoming east after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Sparta/Fort McCoy Airport Temperature Statistics

September Temperature

Sparta, Sparta / Fort McCoy Airport (0 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 (0 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    35.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    58.5 °F
Get WillyWeather+ to remove ads