Fairfield Weather Forecast

    • 46
    • 56

    Rain Showers Likely

    • 59
    • 73

    Rain Showers

    • 62
    • 76

    Rain Showers Likely

    • 60
    • 81

    Rain Showers

    • 56
    • 75

    Rain Showers Likely

    • 55
    • 76

    Chance Rain Showers

Today 11 Apr Walworth

Mostly sunny in the Morning, then mostly cloudy with a 20 percent chance of light rain Showers in the afternoon. Highs in the mid 50s. Southeast Winds 5 to 15 Mph.

Tonight 11 Apr Walworth

Not as cool. Mostly cloudy. Light rain Showers likely through around midnight. Chance of Thunderstorms through the night. Chance of light rain Showers after midnight. Lows in the mid 40s. Southeast Winds 5 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation 70 percent.

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Fairfield Temperature Statistics

April Temperature

Janesville-Rock County (13 miles)

  • Lowest 7 April, 2026

    23 °F

  • Average April

    41.1 °F

  • Highest 8 April, 2026

    71.6 °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

    60.3 °F
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