Lake Dardanelle Weather Forecast

    • 79
    • 102

    Hot

    • 78
    • 102

    Slight Chance Rain

    • 75
    • 97

    Hot

    • 77
    • 99

    Hot

    • 77
    • 98

    Hot

    • 76
    • 97

    Hot

Today 5 Sep Southern Johnson County

Sunny. A slight chance of Showers and Thunderstorms in the afternoon. Hot with Highs around 103. Light and variable Winds, becoming east around 5 Mph in the afternoon. Chance of rain 20 percent. Average rainfall less than 1/10 inch. Heat index Values up to 112.

Tonight 5 Sep Southern Johnson County

Mostly clear. Lows in the mid 70s. East Winds around 5 Mph in the Evening, becoming light and variable. Heat index Values up to 109 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 2 September, 2026

    72 °F

  • Average September

    86.5 °F

  • Highest 1 September, 2026

    101.6 °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

    75.6 °F
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