Fairfield Weather Forecast

    • 44
    • 58

    Mostly Cloudy

    • 49
    • 64

    Rain Showers Likely

    • 51
    • 70

    Slight Chance Thunderstorms

    • 53
    • 77

    Partly Sunny

    • 55
    • 81

    Partly Sunny

    • 58
    • 83

    Partly Sunny

Today 21 May Walworth

Mostly cloudy. Slight chance of Sprinkles through the day. Near steady temperature in the mid 50s. Northeast Winds 10 to 15 Mph.

Tonight 21 May Walworth

Mostly cloudy. Lows in the mid 40s. East Winds 10 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairfield Temperature Statistics

May Temperature

Janesville-Rock County (13 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    54 °F

  • Highest 17 May, 2026

    84.2 °F

Climate (2021–Present)

Janesville-Rock County (13 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