Rock Island Lake Weather Forecast

    • 72
    • 91

    Rain Showers Likely

    • 74
    • 94

    Slight Chance Thunderstorms

    • 73
    • 97

    Slight Chance Thunderstorms

    • 73
    • 95

    Chance Thunderstorms

    • 72
    • 93

    Chance Thunderstorms

    • 73
    • 94

    Slight Chance Thunderstorms

Today 5 Sep Rapides

Partly sunny with a chance of Thunderstorms. A chance of Showers this Morning, then Showers likely this afternoon. Highs in the lower 90s. Temperature falling into the mid 80s this afternoon. Northeast Winds around 5 Mph. Chance of rain 70 percent.

Tonight 5 Sep Rapides

Partly cloudy in the Evening, then clearing. Humid with Lows in the lower 70s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Island Lake Temperature Statistics

September Temperature

Alexandria Esler Regional Airport (10.6 miles)

  • Lowest 3 September, 2026

    71.1 °F

  • Average September

    80.4 °F

  • Highest 3 September, 2026

    96.1 °F

Climate (2021–2026)

Alexandria Esler Regional Airport (10.6 miles)

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  • Average Low 2021–2026

    56.5 °F

  • Average 2021–2026

    67.8 °F

  • Average High 2021–2026

    80.1 °F
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