Fairfield Weather Forecast

    • 61
    • 85

    Mostly Sunny

    • 66
    • 85

    Partly Sunny

    • 63
    • 83

    Rain Showers Likely

    • 60
    • 81

    Slight Chance Thunderstorms

    • 62
    • 83

    Partly Sunny

    • 65
    • 85

    Partly Sunny

Today 7 Jul Walworth

Sunny. Highs in the mid 80s. Northwest Winds up to 5 Mph.

Tonight 7 Jul Walworth

Mostly clear. Lows in the lower 60s. Calm Winds becoming southwest up to 5 Mph after midnight.

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Fairfield Temperature Statistics

July Temperature

Janesville-Rock County (13 miles)

  • Lowest 3 July, 2026

    66.2 °F

  • Average July

    75.2 °F

  • Highest 1 July, 2026

    91.4 °F

Climate (2021–2026)

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

    60.3 °F
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