Fairfield Weather Forecast

    • 29
    • 52

    Partly Sunny

    • 37
    • 53

    Sunny

    • 38
    • 61

    Mostly Sunny

    • 41
    • 66

    Partly Sunny

    • 44
    • 69

    Mostly Sunny

    • 48
    • 71

    Partly Sunny

Today 16 Oct Walworth

Cloudy. Chance of Sprinkles in the Morning, then chance of light rain Showers in the late morning and early afternoon. Highs in the lower 50s. Northwest Winds 15 to 20 Mph with Gusts to around 35 Mph. Chance of Showers 50 percent.

Tonight 16 Oct Walworth

Colder. Partly cloudy in the evening then clearing. Widespread frost after midnight. Lows around 30. North Winds 10 to 15 Mph with Gusts to around 30 Mph decreasing to up to 10 Mph after midnight.

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Fairfield Temperature Statistics

October Temperature

Janesville-Rock County (13 miles)

  • Lowest 2 October, 2026

    41 °F

  • Average October

    58.1 °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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