Lake Dardanelle Weather Forecast

    • 77
    • 94

    Becoming Sunny

    • 78
    • 95

    Hot

    • 78
    • 97

    Hot

    • 79
    • 98

    Hot

    • 78
    • 98

    Hot

    • 77
    • 97

    Hot

Today 9 Aug Southern Johnson County

Sunny. Highs in the mid 90s. Southeast Winds around 5 Mph. Heat index Values up to 109 in the afternoon.

Tonight 9 Aug Southern Johnson County

Mostly clear. Lows in the lower 70s. Southeast Winds 5 to 10 Mph, becoming east after midnight. 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

    66.7 °F

  • Average August

    83.1 °F

  • Highest 5 August, 2026

    101.6 °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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