Lake Dardanelle Weather Forecast

    • 78
    • 98

    Hot

    • 77
    • 96

    Chance Thunderstorms

    • 77
    • 98

    Hot

    • 77
    • 97

    Hot

    • 78
    • 96

    Mostly Sunny

    • 78
    • 97

    Hot

Today 6 Aug Southern Johnson County

Sunny, hot with Highs around 99. Southeast Winds around 5 Mph. Heat index Values up to 109.

Tonight 6 Aug Southern Johnson County

Partly cloudy. Lows in the mid 70s. Southeast Winds around 5 Mph. Heat index Values up to 107 early in the evening.

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Lake Dardanelle Temperature Statistics

August Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 3 August, 2026

    66 °F

  • Average August

    80 °F

  • Highest 3 August, 2026

    93.9 °F

Climate (2021–2026)

Russelville Municipal Airport (15.5 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    75.5 °F
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