Lawrence Weather Forecast

    • 48
    • 72

    Mostly Sunny

    • 54
    • 75

    Mostly Cloudy

    • 57
    • 78

    Partly Sunny

    • 57
    • 81

    Mostly Sunny

    • 61
    • 82

    Partly Sunny

    • 61
    • 83

    Partly Sunny

Today 8 Sep McHenry

Sunny. Highs in the lower 70s. South Winds 5 to 10 Mph.

Tonight 8 Sep McHenry

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 40s. South Winds around 5 Mph.

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Lawrence Temperature Statistics

September Temperature

Janesville-Rock County (23.6 miles)

  • Lowest 4 September, 2025

    41 °F

  • Average September

    56.7 °F

  • Highest 1 September, 2025

    77 °F

Climate (2020–Present)

Janesville-Rock County (23.6 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    60.2 °F
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