Fairfield Weather Forecast

    • 47
    • 74

    Mostly Sunny

    • 48
    • 73

    Partly Sunny

    • 50
    • 72

    Mostly Cloudy

    • 49
    • 72

    Mostly Cloudy

    • 44
    • 64

    Chance Rain Showers

    • 41
    • 60

    Mostly Cloudy

Today 22 Oct Walworth

Sunny. Highs in the lower 70s. Calm Winds becoming east up to 5 Mph in the afternoon.

Tonight 22 Oct Walworth

Clear through around midnight then becoming partly cloudy. Lows in the upper 40s. Southeast Winds up to 5 Mph.

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Fairfield Temperature Statistics

October Temperature

Janesville-Rock County (13 miles)

  • Lowest 17 October, 2026

    32 °F

  • Average October

    55 °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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