Lake Dardanelle Weather Forecast

    • 77
    • 99

    Hot

    • 78
    • 99

    Hot

    • 78
    • 98

    Hot

    • 78
    • 98

    Hot

    • 77
    • 99

    Hot

    • 77
    • 99

    Slight Chance Thunderstorms

Today 31 Aug Southern Johnson County

Sunny, hot with Highs around 100. East Winds around 5 Mph, becoming south in the afternoon. Heat index Values up to 107 in the afternoon.

Tonight 31 Aug Southern Johnson County

Clear. Lows in the mid 70s. East Winds 5 to 10 Mph. Heat index Values up to 106 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

August Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 3 August, 2026

    66.7 °F

  • Average August

    84.9 °F

  • Highest 19 August, 2026

    105.7 °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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