Busseyville Weather Forecast

    • 60
    • 86

    Partly Sunny

    • 61
    • 81

    Mostly Cloudy

    • 61
    • 78

    Chance Thunderstorms

    • 62
    • 81

    Chance Thunderstorms

    • 60
    • 80

    Chance Rain Showers

    • 56
    • 76

    Slight Chance Thunderstorms

Today 18 Sep Jefferson

Mostly sunny. A 20 percent chance of light rain Showers late in the afternoon. Highs in the mid 80s. Southeast Winds up to 10 Mph.

Tonight 18 Sep Jefferson

Partly cloudy. Patchy fog early in the morning. Lows in the upper 50s. Calm Winds.

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Busseyville Temperature Statistics

September Temperature

Janesville-Rock County (19.3 miles)

  • Lowest 7 September, 2025

    39.2 °F

  • Average September

    59 °F

  • Highest 14 September, 2025

    84.2 °F

Climate (2020–Present)

Janesville-Rock County (19.3 miles)

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  • Average Low 2020–2025

    40.4 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    60.2 °F
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