Lake Dardanelle Weather Forecast

    • 77
    • 91

    Slight Chance Thunderstorms

    • 75
    • 92

    Chance Thunderstorms

    • 76
    • 90

    Chance Thunderstorms

    • 76
    • 91

    Slight Chance Thunderstorms

    • 77
    • 92

    Mostly Sunny

    • 79
    • 96

    Slight Chance Thunderstorms

    • 79
    • 94

    Slight Chance Thunderstorms

Today 4 Jul Southern Johnson County

Mostly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 90s. South Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 107.

Tonight 4 Jul Southern Johnson County

Partly cloudy this Evening, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms early. A chance of Showers and Thunderstorms after midnight. Lows in the lower 70s. Southeast Winds around 5 Mph this Evening, becoming light and variable. Chance of rain 40 percent. Average rainfall less than 1/10 inch. Heat index Values up to 107 early this evening.

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  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

July Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 2 July, 2026

    72 °F

  • Average July

    83.4 °F

  • Highest 1 July, 2026

    96.7 °F

Climate (2021–2026)

Russelville Municipal Airport (15.5 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    63.7 °F

  • Average High 2021–2026

    75.4 °F
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