Lake Dardanelle Weather Forecast

    • 77
    • 101

    Chance Rain

    • 77
    • 100

    Hot

    • 74
    • 93

    Rain Showers Likely

    • 74
    • 92

    Slight Chance Thunderstorms

    • 75
    • 94

    Slight Chance Thunderstorms

    • 74
    • 93

    Mostly Sunny

Today 8 Sep Southern Johnson County

Sunny. A chance of rain this afternoon. Hot with Highs around 104. East Winds around 5 Mph. Chance of rain 30 percent. Heat index Values up to 108 this afternoon.

Tonight 8 Sep Southern Johnson County

Clear. A slight chance of rain in the evening. Lows in the lower 70s. East Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 105 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

September Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 1 September, 2026

    72.6 °F

  • Average September

    87.2 °F

  • Highest 5 September, 2026

    102 °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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