Fairfield Weather Forecast

    • 48
    • 73

    Increasing Clouds

    • 44
    • 67

    Mostly Sunny

    • 55
    • 70

    Partly Sunny

    • 57
    • 79

    Mostly Sunny

    • 53
    • 76

    Partly Sunny

    • 52
    • 73

    Chance Rain Showers

Today 7 Oct Walworth

Sunny. Highs in the lower 70s. Northwest Winds 5 to 10 Mph.

Tonight 7 Oct Walworth

Partly cloudy. Lows in the upper 40s. Northwest Winds up to 10 Mph.

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Fairfield Temperature Statistics

October Temperature

Janesville-Rock County (13 miles)

  • Lowest 2 October, 2026

    41 °F

  • Average October

    54.9 °F

  • Highest 3 October, 2026

    69.8 °F

Climate (2021–2026)

Janesville-Rock County (13 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    60.1 °F
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