Mountain Island Lake Weather Forecast

    • 47
    • 53

    Rain

    • 30
    • 57

    Becoming Sunny

    • 36
    • 54

    Mostly Sunny

    • 28
    • 59

    Partly Sunny

    • 28
    • 50

    Partly Sunny

    • 42
    • 55

    Partly Sunny

    • 45
    • 66

    Partly Sunny

Today 18 Dec Gaston

Rain. Patchy fog. Highs in the mid 50s. East Winds around 5 Mph. Chance of rain near 100 percent.

Tonight 18 Dec Gaston

Widespread Showers and occasional drizzle. Widespread fog. Visibility one quarter mile or less at Times this evening. Lows in the mid 40s. South Winds 10 to 15 Mph. Gusts up to 35 Mph after midnight. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mountain Island Lake Temperature Statistics

December Temperature

Charlotte, Charlotte / Douglas International Airport (9.3 miles)

  • Lowest 15 December, 2025

    16 °F

  • Average December

    39.8 °F

  • Highest 13 December, 2025

    60.1 °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

    63.2 °F

  • Average High 2020–2025

    73.6 °F
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