Fairfield Weather Forecast

    • 54
    • 77

    Becoming Sunny

    • 63
    • 80

    Chance Rain Showers

    • 59
    • 81

    Chance Rain Showers

    • 57
    • 79

    Mostly Sunny

    • 58
    • 79

    Partly Sunny

    • 63
    • 79

    Chance Rain Showers

    • 67
    • 82

    Chance Rain Showers

Today 24 Aug Walworth

Partly sunny. Northwest Winds up to 5 Mph.

Tonight 24 Aug Walworth

Mostly clear. Lows in the lower 50s. East Winds up to 5 Mph through around midnight becoming calm.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairfield Temperature Statistics

August Temperature

Janesville-Rock County (13 miles)

  • Lowest 3 August, 2026

    53.6 °F

  • Average August

    68.7 °F

  • Highest 4 August, 2026

    84.2 °F

Climate (2021–2026)

Janesville-Rock County (13 miles)

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

  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.3 °F
Get WillyWeather+ to remove ads