Lake Dardanelle Weather Forecast

    • 79
    • 101

    Hot

    • 74
    • 93

    Mostly Sunny

    • 73
    • 89

    Partly Sunny

    • 75
    • 90

    Slight Chance Thunderstorms

    • 77
    • 94

    Partly Sunny

    • 79
    • 98

    Hot

Today 21 Jul Southern Johnson County

Sunny, hot with Highs around 103. West Winds around 5 Mph. Heat index Values up to 120 this afternoon.

Tonight 21 Jul Southern Johnson County

Mostly clear. Lows in the mid 70s. North Winds 5 to 10 Mph with Gusts up to 25 Mph. Heat index Values up to 118 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

July Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 7 July, 2026

    68.6 °F

  • Average July

    83.1 °F

  • Highest 10 July, 2026

    97.6 °F

Climate (2021–2026)

Russelville Municipal Airport (15.5 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    75.5 °F
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