Lake Dardanelle Weather Forecast

    • 75
    • 95

    Mostly Sunny

    • 77
    • 97

    Hot

    • 76
    • 96

    Chance Thunderstorms

    • 75
    • 93

    Chance Thunderstorms

    • 76
    • 93

    Slight Chance Thunderstorms

    • 76
    • 94

    Mostly Sunny

Today 4 Aug Southern Johnson County

Sunny. Highs in the upper 90s. East Winds around 5 Mph. Heat index Values up to 105 in the afternoon.

Tonight 4 Aug Southern Johnson County

Mostly clear. Lows in the lower 70s. East Winds around 5 Mph.

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Lake Dardanelle Temperature Statistics

August Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 1 August, 2026

    75 °F

  • Average August

    80 °F

  • Highest 1 August, 2026

    86 °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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