Helenville Weather Forecast

    • 60
    • 80

    Chance Thunderstorms

    • 56
    • 78

    Mostly Sunny

    • 60
    • 80

    Mostly Sunny

    • 61
    • 80

    Chance Thunderstorms

    • 57
    • 78

    Mostly Sunny

    • 57
    • 76

    Partly Sunny

Today 18 Aug Jefferson

Partly sunny. A 50 percent chance of light Showers and Thunderstorms in the afternoon. Highs in the upper 70s. Southwest Winds 5 to 15 Mph.

Tonight 18 Aug Jefferson

Partly cloudy. A 50 percent chance of light rain Showers and Thunderstorms through around midnight. Lows around 60. West Winds up to 5 Mph shifting to the northwest after midnight.

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Helenville Temperature Statistics

August Temperature

Watertown (10.6 miles)

  • Lowest 3 August, 2026

    52.9 °F

  • Average August

    71.4 °F

  • Highest 7 August, 2026

    83.8 °F

Climate (2021–2026)

Watertown (10.6 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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