Lake Dardanelle Weather Forecast

    • 74
    • 89

    Chance Rain Showers

    • 77
    • 96

    Slight Chance Thunderstorms

    • 75
    • 95

    Slight Chance Thunderstorms

    • 73
    • 96

    Mostly Sunny

    • 73
    • 94

    Mostly Sunny

    • 73
    • 96

    Mostly Sunny

    • 76
    • 98

    Hot

Today 24 Aug Southern Johnson County

Mostly cloudy with a chance of Showers and Thunderstorms. Highs in the upper 80s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 40 percent. Average rainfall less than 1/10 inch.

Tonight 24 Aug Southern Johnson County

Mostly 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. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent. Average rainfall less than 1/10 inch.

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  • Temperature Forecast NOAA

  • 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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