Lake Dardanelle Weather Forecast

    • 79
    • 95

    Mostly Sunny

    • 79
    • 95

    Mostly Sunny

    • 80
    • 99

    Hot

    • 76
    • 96

    Mostly Sunny

    • 75
    • 92

    Partly Sunny

    • 76
    • 93

    Partly Sunny

Today 19 Jul Southern Johnson County

Sunny. Highs in the mid 90s. West Winds around 5 Mph. Heat index Values up to 107.

Tonight 19 Jul Southern Johnson County

Mostly clear. Lows in the mid 70s. West Winds around 5 Mph in the Evening, becoming light and variable. Heat index Values up to 106 early in the evening.

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Lake Dardanelle Temperature Statistics

July Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 7 July, 2026

    68.6 °F

  • Average July

    82.8 °F

  • Highest 10 July, 2026

    97.6 °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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