Mountain Island Lake Weather Forecast

    • 64
    • 89

    Sunny

    • 70
    • 93

    Mostly Sunny

    • 69
    • 94

    Chance Thunderstorms

    • 68
    • 87

    Chance Thunderstorms

    • 69
    • 90

    Slight Chance Thunderstorms

    • 67
    • 90

    Chance Rain Showers

    • 66
    • 85

    Chance Rain Showers

Today 16 Sep Gaston

Mostly cloudy with a chance of Showers. Highs in the lower 80s. Chance of rain 40 percent.

Tonight 16 Sep Gaston

Clear. Lows in the lower 60s. East Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Island Lake Temperature Statistics

September Temperature

Charlotte, Charlotte / Douglas International Airport (9.3 miles)

  • Lowest 8 September, 2026

    64.7 °F

  • Average September

    82.7 °F

  • Highest 5 September, 2026

    99.6 °F

Climate (2021–2026)

Charlotte, Charlotte / Douglas International Airport (9.3 miles)

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  • Average Low 2021–2026

    53.7 °F

  • Average 2021–2026

    63.7 °F

  • Average High 2021–2026

    74.1 °F
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