Lake Dardanelle Weather Forecast

    • 75
    • 97

    Chance Thunderstorms

    • 75
    • 93

    Rain Showers Likely

    • 75
    • 93

    Slight Chance Thunderstorms

    • 76
    • 98

    Slight Chance Thunderstorms

    • 74
    • 96

    Chance Rain Showers

    • 73
    • 97

    Hot

    • 74
    • 96

    Mostly Sunny

Today 22 Aug Southern Johnson County

Partly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the upper 90s. Northwest Winds around 5 Mph. Chance of rain 20 percent. Average rainfall less than 1/10 inch. Heat index Values up to 109.

Tonight 22 Aug Southern Johnson County

Partly cloudy with a slight chance of Thunderstorms. A slight chance of Showers this Evening, then a chance of Showers after midnight. Lows in the lower 70s. Northeast Winds around 5 Mph. Chance of rain 50 percent. Average rainfall less than 1/10 inch. Heat index Values up to 105 early this evening.

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  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

August Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 3 August, 2026

    66.7 °F

  • Average August

    85.5 °F

  • Highest 19 August, 2026

    105.7 °F

Climate (2021–2026)

Russelville Municipal Airport (15.5 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    63.9 °F

  • Average High 2021–2026

    75.6 °F
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