Fairfield Weather Forecast

    • 53
    • 87

    Becoming Sunny

    • 47
    • 75

    Mostly Sunny

    • 56
    • 83

    Mostly Sunny

    • 51
    • 79

    Mostly Sunny

    • 54
    • 80

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 52
    • 79

    Mostly Sunny

Today 27 May Walworth

Mostly sunny. Near steady temperature in the mid 80s. Northeast Winds 5 to 10 Mph.

Tonight 27 May Walworth

Mostly clear. Lows in the lower 50s. Northeast Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairfield Temperature Statistics

May Temperature

Janesville-Rock County (13 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    54.9 °F

  • Highest 25 May, 2026

    86 °F

Climate (2021–Present)

Janesville-Rock County (13 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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