Lake Dardanelle Weather Forecast

    • 68
    • 86

    Slight Chance Thunderstorms

    • 64
    • 86

    Mostly Sunny

    • 65
    • 84

    Partly Sunny

    • 67
    • 85

    Partly Sunny

    • 67
    • 86

    Slight Chance Thunderstorms

    • 69
    • 89

    Partly Sunny

Today 22 Sep Southern Johnson County

Mostly sunny with a chance of Showers with a slight chance of Thunderstorms. Highs in the upper 80s. Northeast Winds around 5 Mph. Chance of rain 40 percent. Average rainfall less than 1/10 inch.

Tonight 22 Sep Southern Johnson County

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 60s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Dardanelle Temperature Statistics

September Temperature

Russelville Municipal Airport (15.5 miles)

  • Lowest 20 September, 2026

    66.9 °F

  • Average September

    85.9 °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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