Fairfield Weather Forecast

    • 38
    • 68

    Becoming Sunny

    • 36
    • 59

    Mostly Sunny

    • 39
    • 59

    Partly Sunny

    • 45
    • 67

    Rain Showers Likely

    • 40
    • 62

    Partly Sunny

    • 48
    • 67

    Chance Rain Showers

Today 9 May Walworth

Partly sunny. Scattered Sprinkles in the late morning and afternoon. Highs in the upper 60s. West Winds 5 to 10 Mph increasing to northwest 15 to 20 Mph in the afternoon.

Tonight 9 May Walworth

Colder. Mostly clear. Lows in the upper 30s. Northwest Winds up to 10 Mph.

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  • Temperature Real-Time

Fairfield Temperature Statistics

May Temperature

Janesville-Rock County (13 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    47 °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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