Jefferson County Fairgrounds Weather Forecast

    • 65
    • 80

    Mostly Cloudy

    • 64
    • 84

    Slight Chance Thunderstorms

    • 62
    • 81

    Chance Thunderstorms

    • 65
    • 83

    Rain Showers Likely

    • 64
    • 83

    Chance Thunderstorms

    • 61
    • 80

    Chance Rain Showers

    • 59
    • 79

    Slight Chance Thunderstorms

Today 6 Aug Jefferson

Partly sunny. Southeast Winds around 5 Mph.

Tonight 6 Aug Jefferson

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

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Jefferson County Fairgrounds Temperature Statistics

August Temperature

Watertown (11.8 miles)

  • Lowest 3 August, 2026

    52.9 °F

  • Average August

    69.1 °F

  • Highest 4 August, 2026

    83.3 °F

Climate (2021–2026)

Watertown (11.8 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    44.9 °F

  • Average High 2021–2026

    53.9 °F
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