Lake Dardanelle Weather Forecast

    • 77
    • 95

    Partly Sunny

    • 77
    • 98

    Slight Chance Thunderstorms

    • 77
    • 97

    Hot

    • 77
    • 97

    Hot

    • 75
    • 97

    Hot

    • 74
    • 96

    Mostly Sunny

Today 13 Sep Southern Johnson County

Sunny. Highs in the upper 90s. East Winds around 5 Mph. Heat index Values up to 109.

Tonight 13 Sep Southern Johnson County

Partly cloudy in the Evening, then clearing. Lows in the lower 70s. Northeast Winds around 5 Mph. 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 8 September, 2026

    69.7 °F

  • Average September

    86.7 °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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