Round Lake Weather Forecast

    • 50
    • 71

    Chance Rain Showers

    • 52
    • 67

    Rain Showers

    • 51
    • 70

    Rain Showers

    • 50
    • 69

    Partly Sunny

    • 51
    • 68

    Slight Chance Rain Showers

    • 53
    • 73

    Slight Chance Rain Showers

Today 12 Sep Lake

Mostly sunny. A chance of Showers this morning. Not as warm with Highs around 70. Northwest Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 12 Sep Lake

Mostly cloudy. A chance of Showers after midnight. Lows in the lower 50s. Northwest Winds around 5 Mph, becoming northeast after midnight. Chance of rain 30 percent.

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Round Lake Temperature Statistics

September Temperature

Madison Municipal Airport (7.5 miles)

  • Lowest 10 September, 2026

    50 °F

  • Average September

    72.6 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Madison Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    37.5 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    58.3 °F
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