Lake Dardanelle Weather Forecast

    • 75
    • 98

    Hot

    • 74
    • 98

    Hot

    • 75
    • 97

    Slight Chance Thunderstorms

    • 71
    • 92

    Chance Thunderstorms

    • 67
    • 88

    Partly Sunny

    • 65
    • 86

    Mostly Sunny

    • 66
    • 86

    Partly Sunny

Today 18 Sep Southern Johnson County

Partly cloudy. Lows in the lower 60s. Highs in the upper 80s.

Tonight 18 Sep Southern Johnson County

Clear. Lows in the lower 70s. Southeast Winds around 5 Mph this Evening, becoming light and variable.

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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

    86.4 °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

    64 °F

  • Average High 2021–2026

    75.7 °F
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