Indian Mounds Park Weather Forecast

    • 59
    • 81

    Mostly Cloudy

    • 57
    • 79

    Partly Sunny

    • 61
    • 79

    Mostly Cloudy

    • 69
    • 84

    Rain Showers Likely

    • 62
    • 85

    Chance Rain Showers

    • 56
    • 77

    Partly Sunny

Today 5 Sep Jefferson

Partly sunny. Patchy fog in the morning. Highs in the lower 80s. Northeast Winds up to 10 Mph.

Tonight 5 Sep Jefferson

Mostly clear. Lows around 60. Northeast Winds up to 10 Mph.

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Indian Mounds Park Temperature Statistics

September Temperature

Janesville-Rock County (18.6 miles)

  • Lowest 1 September, 2026

    69.8 °F

  • Average September

    77.5 °F

  • Highest 1 September, 2026

    91.4 °F

Climate (2021–2026)

Janesville-Rock County (18.6 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.3 °F
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