Fairfield Weather Forecast

    • 56
    • 76

    Mostly Sunny

    • 54
    • 77

    Chance Rain Showers

    • 53
    • 71

    Chance Rain Showers

    • 51
    • 74

    Slight Chance Rain Showers

    • 55
    • 75

    Partly Sunny

Today 19 Jun Walworth

Sunny. A 20 percent chance of light rain Showers late in the afternoon. Highs in the mid 70s. Northwest Winds 5 to 15 Mph.

Tonight 19 Jun Walworth

Partly cloudy. Chance of light rain Showers and slight chance of Thunderstorms through around midnight. Lows in the mid 50s. West Winds up to 10 Mph. Chance of precipitation 40 percent.

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Fairfield Temperature Statistics

June Temperature

Janesville-Rock County (13 miles)

  • Lowest 3 June, 2026

    44.6 °F

  • Average June

    66.9 °F

  • Highest 4 June, 2026

    87.8 °F

Climate (2021–2026)

Janesville-Rock County (13 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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