Lake Dardanelle Weather Forecast

    • 72
    • 92

    Chance Rain Showers

    • 68
    • 88

    Partly Sunny

    • 64
    • 85

    Mostly Sunny

    • 64
    • 84

    Partly Sunny

    • 66
    • 83

    Mostly Cloudy

    • 66
    • 84

    Partly Sunny

Today 21 Sep Southern Johnson County

Mostly cloudy this Morning, then clearing. A chance of Showers with a slight chance of Thunderstorms. Highs in the lower 90s. Northwest Winds around 5 Mph. Chance of rain 50 percent. Average rainfall less than 1/10 inch.

Tonight 21 Sep Southern Johnson County

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 60s. North Winds around 5 Mph. Average rainfall less than 1/10 inch.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

September Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 8 September, 2026

    69.7 °F

  • Average September

    86.3 °F

  • Highest 8 September, 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

    64 °F

  • Average High 2021–2026

    75.7 °F
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