Lake Dardanelle Weather Forecast

    • 76
    • 90

    Chance Thunderstorms

    • 76
    • 95

    Partly Sunny

    • 73
    • 87

    Mostly Sunny

    • 72
    • 88

    Mostly Sunny

    • 73
    • 90

    Mostly Sunny

    • 75
    • 93

    Mostly Sunny

Today 30 Jul Southern Johnson County

Partly sunny with a chance of Showers and Thunderstorms. Near steady temperature around 90. Southeast Winds around 5 Mph. Chance of rain 40 percent. Average rainfall less than 1/10 inch. Heat index Values up to 106.

Tonight 30 Jul Southern Johnson County

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the lower 70s. East Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

July Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 7 July, 2026

    68.6 °F

  • Average July

    84.5 °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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