Lake Dardanelle Weather Forecast

    • 63
    • 77

    Chance Thunderstorms

    • 64
    • 74

    Rain Showers

    • 63
    • 79

    Rain Showers Likely

    • 64
    • 82

    Rain Showers Likely

    • 64
    • 81

    Rain Showers Likely

    • 65
    • 82

    Rain Showers Likely

Today 20 May Southern Johnson County

Mostly cloudy in the Morning, then becoming partly sunny. A chance of Showers and Thunderstorms. Highs in the upper 70s. Northeast Winds around 5 Mph. Chance of rain 40 percent. Average rainfall less than 1/10 inch.

Tonight 20 May Southern Johnson County

Mostly cloudy. A slight chance of Showers after midnight. Lows in the lower 60s. Northeast Winds around 5 Mph. Chance of rain 20 percent. Average rainfall less than 1/10 inch.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

May Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 3 May, 2026

    41.6 °F

  • Average May

    67.2 °F

  • Highest 15 May, 2026

    89.7 °F

Climate (2021–Present)

Russelville Municipal Airport (15.5 miles)

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  • Average Low 2021–2026

    52.3 °F

  • Average 2021–2026

    63.6 °F

  • Average High 2021–2026

    75.3 °F
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