Fairfield Weather Forecast

    • 34
    • 55

    Decreasing Clouds

    • 40
    • 59

    Slight Chance Rain Showers

    • 43
    • 63

    Chance Rain Showers

    • 45
    • 72

    Chance Rain Showers

    • 38
    • 61

    Partly Sunny

    • 41
    • 60

    Partly Sunny

Today 6 May Walworth

Partly sunny. Areas of frost in the morning. Highs in the mid 50s. Northwest Winds 5 to 15 Mph.

Tonight 6 May Walworth

Partly cloudy through around midnight then becoming clear. Widespread frost after midnight. Lows in the mid 30s. West Winds up to 10 Mph.

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Fairfield Temperature Statistics

May Temperature

Janesville-Rock County (13 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    49.1 °F

  • Highest 4 May, 2026

    80.6 °F

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

    60.4 °F
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