Lake Dardanelle Weather Forecast

    • 75
    • 94

    Chance Thunderstorms

    • 72
    • 88

    Mostly Sunny

    • 72
    • 90

    Mostly Sunny

    • 73
    • 92

    Sunny

    • 75
    • 95

    Sunny

    • 77
    • 96

    Mostly Sunny

    • 77
    • 97

    Hot

Today 31 Jul Southern Johnson County

Mostly sunny. Highs in the upper 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 110.

Tonight 31 Jul Southern Johnson County

Mostly sunny Early, then partly cloudy with a chance of Showers and Thunderstorms this evening. Mostly clear after midnight. Lows in the lower 70s. Southwest Winds 5 to 10 Mph, becoming west after midnight. Chance of rain 40 percent. Average rainfall 1/10 inch. Heat index Values up to 109 early this evening.

Graph Plots Open in Graphs

  • 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

    84.5 °F

  • Highest 21 July, 2026

    104.6 °F

Climate (2021–2026)

Russelville Municipal Airport (15.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    63.8 °F

  • Average High 2021–2026

    75.5 °F
Get WillyWeather+ to remove ads