Mountain Island Lake Weather Forecast

    • 60
    • 78

    Slight Chance Rain Showers

    • 61
    • 80

    Partly Sunny

    • 63
    • 85

    Mostly Sunny

    • 62
    • 89

    Mostly Sunny

    • 62
    • 87

    Partly Sunny

    • 62
    • 81

    Partly Sunny

Today 16 Sep Gaston

Mostly sunny. Near steady Temperatures around 80. Northeast Winds around 5 Mph.

Tonight 16 Sep Gaston

Partly cloudy. Lows in the upper 50s. Northeast Winds around 5 Mph in the 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 9 September, 2025

    54 °F

  • Average September

    70.8 °F

  • Highest 5 September, 2025

    89.1 °F

Climate (2020–Present)

Charlotte, Charlotte / Douglas International Airport (9.3 miles)

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  • Average Low 2020–2025

    53.4 °F

  • Average 2020–2025

    63.3 °F

  • Average High 2020–2025

    73.6 °F
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