Lake Dardanelle Weather Forecast

    • 75
    • 97

    Hot

    • 76
    • 97

    Hot

    • 77
    • 100

    Hot

    • 74
    • 93

    Chance Thunderstorms

    • 74
    • 93

    Chance Thunderstorms

    • 75
    • 95

    Mostly Sunny

Today 7 Sep Southern Johnson County

Mostly sunny. Highs in the upper 90s. Northeast Winds 5 to 10 Mph, becoming east this afternoon. Heat index Values up to 108.

Tonight 7 Sep Southern Johnson County

Clear. Lows in the lower 70s. East Winds 5 to 10 Mph.

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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 °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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