Lake Dardanelle Weather Forecast

    • 77
    • 96

    Chance Rain

    • 77
    • 96

    Mostly Sunny

    • 78
    • 97

    Hot

    • 78
    • 96

    Mostly Sunny

    • 78
    • 96

    Mostly Sunny

    • 78
    • 97

    Hot

Today 7 Aug Southern Johnson County

Mostly sunny. A chance of rain with isolated Thunderstorms in the afternoon. Highs in the upper 90s. Northeast Winds around 5 Mph, becoming southwest around 5 Mph in the afternoon. Chance of rain 40 percent. Average rainfall less than 1/10 inch. Heat index Values up to 110.

Tonight 7 Aug Southern Johnson County

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of rain with isolated Thunderstorms. Lows in the lower 70s. Southeast Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 40 percent. Average rainfall less than 1/10 inch.

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Lake Dardanelle Temperature Statistics

August Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 3 August, 2026

    66 °F

  • Average August

    80.9 °F

  • Highest 4 August, 2026

    96.1 °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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