Fairfield Weather Forecast

    • 36
    • 59

    Decreasing Clouds

    • 34
    • 54

    Mostly Cloudy

    • 41
    • 59

    Mostly Cloudy

    • 42
    • 64

    Chance Rain Showers

    • 47
    • 70

    Chance Rain Showers

    • 40
    • 63

    Chance Rain Showers

Today 5 May Walworth

Much cooler. Mostly cloudy. Highs in the upper 50s. Northwest Winds 5 to 15 Mph.

Tonight 5 May Walworth

Mostly cloudy in the evening then becoming partly cloudy. Areas of frost early in the morning. Lows in the mid 30s. Northwest Winds up to 10 Mph.

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Fairfield Temperature Statistics

May Temperature

Janesville-Rock County (13 miles)

  • Lowest

  • Average May

  • Highest

Climate (2021–Present)

Janesville-Rock County (13 miles)

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  • Average Low 2021–2026

    40.4 °F
  • Average 2021–2026

    48.7 °F
  • Average High 2021–2026

    60.3 °F
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