Jefferson County Fairgrounds Weather Forecast

    • 63
    • 79

    Chance Rain Showers

    • 64
    • 81

    Rain Showers Likely

    • 68
    • 81

    Rain Showers Likely

    • 61
    • 82

    Slight Chance Thunderstorms

    • 59
    • 78

    Mostly Sunny

    • 63
    • 79

    Chance Rain Showers

    • 59
    • 79

    Chance Rain Showers

Today 13 Aug Jefferson

Light rain. East Winds around 5 Mph. Chance of rain 90 percent.

Tonight 13 Aug Jefferson

Mostly cloudy with a 40 percent chance of light rain. Lows in the lower 60s. East 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

    70.6 °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

    44.9 °F

  • Average High 2021–2026

    53.9 °F
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