South Beloit Weather Forecast

    • 38
    • 70

    Becoming Sunny

    • 37
    • 61

    Mostly Sunny

    • 40
    • 62

    Rain Showers

    • 46
    • 70

    Chance Thunderstorms

    • 41
    • 63

    Mostly Sunny

    • 49
    • 68

    Chance Rain Showers

Today 9 May Winnebago

Partly cloudy. Breezy. Temperatures in the upper 60s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 9 May Winnebago

Mostly clear. Breezy. Lows in the upper 30s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to around 5 Mph after midnight.

Graph Plots Open in Graphs
  • Temperature Forecast NOAA

  • Temperature Real-Time

South Beloit Temperature Statistics

May Temperature

Janesville-Rock County (8.7 miles)

  • Lowest 2 May, 2026

    30.2 °F
  • Average May

    47 °F
  • Highest 4 May, 2026

    80.6 °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

    48.7 °F
  • Average High 2021–2026

    60.4 °F
Get WillyWeather+ to remove ads