Jefferson County Fairgrounds Weather Forecast

    • 57
    • 81

    Mostly Sunny

    • 61
    • 82

    Partly Sunny

    • 66
    • 80

    Rain Showers Likely

    • 71
    • 86

    Chance Thunderstorms

    • 71
    • 87

    Chance Thunderstorms

    • 68
    • 86

    Chance Rain Showers

    • 67
    • 86

    Chance Rain Showers

Today 27 Aug Jefferson

Mostly sunny. Northwest Winds around 5 Mph.

Tonight 27 Aug Jefferson

Partly cloudy. Lows in the upper 50s. East Winds up to 5 Mph shifting to the south after midnight.

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Jefferson County Fairgrounds Temperature Statistics

August Temperature

Watertown (11.8 miles)

  • Lowest 24 August, 2026

    47.8 °F

  • Average August

    69.6 °F

  • Highest 7 August, 2026

    83.8 °F

Climate (2021–2026)

Watertown (11.8 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    44.8 °F

  • Average High 2021–2026

    53.9 °F
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