Fairfield Weather Forecast

    • 42
    • 66

    Mostly Sunny

    • 43
    • 67

    Mostly Sunny

    • 47
    • 68

    Mostly Sunny

    • 49
    • 70

    Partly Sunny

    • 49
    • 68

    Partly Sunny

    • 51
    • 68

    Partly Sunny

Today 19 Oct Walworth

Sunny until late afternoon then becoming partly sunny. Highs in the mid 60s. Southwest Winds up to 5 Mph.

Tonight 19 Oct Walworth

Partly cloudy through around midnight then clearing. Lows in the mid 40s. Calm Winds.

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Fairfield Temperature Statistics

October Temperature

Janesville-Rock County (13 miles)

  • Lowest 17 October, 2026

    32 °F

  • Average October

    56.4 °F

  • Highest 12 October, 2026

    86 °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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