Lake Dardanelle Weather Forecast

    • 73
    • 83

    Rain Showers

    • 74
    • 89

    Chance Thunderstorms

    • 76
    • 91

    Mostly Sunny

    • 77
    • 93

    Mostly Sunny

    • 78
    • 95

    Mostly Sunny

    • 79
    • 97

    Hot

Today 15 Jul Southern Johnson County

Partly sunny. A chance of Showers and Thunderstorms in the Morning, then Showers with Thunderstorms likely in the afternoon. Highs in the upper 80s. Northeast Winds around 5 Mph, becoming southeast in the afternoon. Chance of rain 90 percent. Average rainfall 1/4 to 1/2 inch.

Tonight 15 Jul Southern Johnson County

Mostly cloudy with Showers and Thunderstorms likely in the Evening, then partly cloudy after midnight. Lows around 70. North Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 70 percent. Average rainfall less than 1/10 inch.

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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

    83.6 °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

    75.4 °F
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