Fairfield Weather Forecast

    • 40
    • 66

    Mostly Sunny

    • 43
    • 63

    Sunny

    • 50
    • 71

    Mostly Sunny

    • 44
    • 70

    Partly Sunny

    • 46
    • 68

    Partly Sunny

    • 49
    • 68

    Mostly Sunny

Today 4 Oct Walworth

Sunny. Highs in the upper 60s. Northwest Winds 5 to 10 Mph.

Tonight 4 Oct Walworth

Clear. Lows in the lower 40s. Northwest Winds up to 5 Mph.

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Fairfield Temperature Statistics

October Temperature

Janesville-Rock County (13 miles)

  • Lowest 1 October, 2026

    55.4 °F

  • Average October

    62.3 °F

  • Highest 1 October, 2026

    64.4 °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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