Fairfield Weather Forecast

    • 49
    • 61

    Chance Rain Showers

    • 54
    • 68

    Mostly Cloudy

    • 57
    • 73

    Rain Showers Likely

    • 44
    • 69

    Chance Rain Showers

    • 40
    • 59

    Slight Chance Rain Showers

    • 44
    • 62

    Partly Sunny

Today 15 Oct Walworth

Mostly cloudy. A 50 percent chance of light rain Showers in the morning. Highs in the lower 60s. East Winds 5 to 10 Mph.

Tonight 15 Oct Walworth

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 40s. East Winds up to 5 Mph.

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Fairfield Temperature Statistics

October Temperature

Janesville-Rock County (13 miles)

  • Lowest 9 October, 2025

    35.6 °F

  • Average October

    59.3 °F

  • Highest 3 October, 2025

    87.8 °F

Climate (2020–Present)

Janesville-Rock County (13 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    60.4 °F
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