Lake Dardanelle Weather Forecast

    • 74
    • 92

    Chance Rain Showers

    • 75
    • 95

    Hot

    • 76
    • 94

    Hot

    • 76
    • 97

    Hot

    • 76
    • 97

    Hot

    • 74
    • 96

    Slight Chance Thunderstorms

Today 12 Sep Southern Johnson County

Sunny with isolated Thunderstorms. A slight chance of Showers Early, then a chance of Showers. Highs in the lower 90s. Southwest Winds around 5 Mph. Chance of rain 30 percent. Heat index Values up to 105.

Tonight 12 Sep Southern Johnson County

Partly cloudy with a slight chance of Showers with isolated Thunderstorms. Lows in the lower 70s. East Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

September Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 8 September, 2026

    69.7 °F

  • Average September

    87.4 °F

  • Highest 8 September, 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

    63.9 °F

  • Average High 2021–2026

    75.7 °F
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