Lake Dardanelle Weather Forecast

    • 77
    • 98

    Hot

    • 76
    • 98

    Hot

    • 75
    • 98

    Hot

    • 75
    • 98

    Hot

    • 75
    • 97

    Hot

    • 72
    • 94

    Chance Rain Showers

    • 71
    • 90

    Slight Chance Thunderstorms

Today 16 Sep Southern Johnson County

Sunny with a slight chance of Showers and Thunderstorms. Hot. Near steady temperature in the upper 90s. Southeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 109.

Tonight 16 Sep Southern Johnson County

Clear. Lows in the lower 70s. East 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 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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