Lake Tomah Weather Forecast

    • 59
    • 83

    Chance Rain Showers

    • 58
    • 75

    Chance Thunderstorms

    • 58
    • 73

    Chance Rain Showers

    • 58
    • 77

    Chance Thunderstorms

    • 55
    • 76

    Chance Rain Showers

    • 52
    • 73

    Slight Chance Rain Showers

Today 18 Sep Monroe

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the lower 80s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 18 Sep Monroe

Mostly cloudy with a slight chance of Showers and Thunderstorms. Lows in the lower 60s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Tomah Temperature Statistics

September Temperature

Sparta, Sparta / Fort McCoy Airport (10.6 miles)

  • Lowest 7 September, 2025

    32.9 °F

  • Average September

    60.6 °F

  • Highest 13 September, 2025

    85.5 °F

Climate (2020–Present)

Sparta, Sparta / Fort McCoy Airport (10.6 miles)

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  • Average Low 2020–2025

    34.5 °F

  • Average 2020–2025

    47.2 °F

  • Average High 2020–2025

    57.9 °F
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