Lake Dardanelle Weather Forecast

    • 77
    • 95

    Thunderstorms Likely

    • 76
    • 89

    Chance Thunderstorms

    • 77
    • 94

    Slight Chance Thunderstorms

    • 73
    • 91

    Mostly Sunny

    • 74
    • 90

    Mostly Sunny

    • 74
    • 92

    Mostly Sunny

Today 29 Jul Southern Johnson County

Partly sunny with a slight chance of Thunderstorms. A chance of rain Early, then rain likely. Highs in the mid 90s. East Winds around 5 Mph. Chance of rain 70 percent. Average rainfall 1/10 to 1/4 inch. Heat index Values up to 112.

Tonight 29 Jul Southern Johnson County

Partly cloudy with a chance of rain with a slight chance of Thunderstorms. Humid with Lows in the lower 70s. East Winds around 5 Mph. Chance of rain 50 percent. Average rainfall less than 1/10 inch. Heat index Values up to 107 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

    84.3 °F

  • Highest 21 July, 2026

    104.6 °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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