South Beloit Weather Forecast

    • 40
    • 52

    Chance Rain Showers

    • 40
    • 49

    Rain Showers Likely

    • 46
    • 69

    Rain Showers

    • 34
    • 54

    Partly Sunny

    • 43
    • 59

    Mostly Sunny

    • 46
    • 68

    Chance Rain Showers

    • 31
    • 60

    Rain Showers Likely

Today 4 Mar Winnebago

Mostly cloudy. Highs in the mid 50s. Temperature falling into the mid 40s in the afternoon. East Winds 5 to 10 Mph.

Tonight 4 Mar Winnebago

Mostly cloudy. Patchy fog in the late evening and overnight. A slight chance of Showers after midnight. A chance of Showers late. Lows around 40. East Winds around 5 Mph. Chance of precipitation 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

South Beloit Temperature Statistics

March Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 1 March, 2026

    10.4 °F

  • Average March

    24.6 °F

  • Highest 2 March, 2026

    44.6 °F

Climate (2021–Present)

Janesville-Rock County (8.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.4 °F
Get WillyWeather+ to remove ads