Fairfield Weather Forecast

    • 65
    • 80

    Increasing Clouds

    • 64
    • 83

    Chance Thunderstorms

    • 62
    • 80

    Chance Thunderstorms

    • 66
    • 82

    Rain Showers Likely

    • 65
    • 82

    Chance Rain Showers

    • 61
    • 79

    Chance Rain Showers

    • 59
    • 78

    Chance Rain Showers

Today 6 Aug Walworth

Partly sunny. Southeast Winds around 5 Mph.

Tonight 6 Aug Walworth

Partly cloudy through around midnight then becoming mostly cloudy. Patchy fog early in the morning. Lows in the mid 60s. Southeast Winds up to 5 Mph through around midnight becoming calm.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fairfield Temperature Statistics

August Temperature

Janesville-Rock County (13 miles)

  • Lowest 3 August, 2026

    53.6 °F

  • Average August

    67.3 °F

  • Highest 4 August, 2026

    84.2 °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

    60.4 °F
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