Lake Dardanelle Weather Forecast

    • 80
    • 101

    Hot

    • 77
    • 95

    Chance Thunderstorms

    • 77
    • 91

    Chance Thunderstorms

    • 75
    • 93

    Slight Chance Thunderstorms

    • 73
    • 90

    Mostly Sunny

    • 73
    • 90

    Mostly Sunny

Today 28 Jul Southern Johnson County

Mostly sunny. Hot with Highs around 103. West Winds around 5 Mph. Heat index Values up to 115.

Tonight 28 Jul Southern Johnson County

Partly cloudy. Lows in the upper 70s. West Winds around 5 Mph in the Evening, becoming light and variable. Heat index Values up to 113 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

    84.1 °F

  • Highest 21 July, 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

    63.8 °F

  • Average High 2021–2026

    75.5 °F
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