Marsh Island Weather Forecast

    • 60
    • 80

    Chance Rain Showers

    • 57
    • 84

    Mostly Sunny

    • 58
    • 82

    Mostly Sunny

    • 61
    • 76

    Chance Rain Showers

    • 60
    • 76

    Chance Rain Showers

    • 61
    • 79

    Partly Sunny

Today 13 Aug Lincoln

Partly sunny with a chance of Showers. A chance of Thunderstorms in the afternoon. Highs around 80. Light and variable Winds. Chance of rain 50 percent.

Tonight 13 Aug Lincoln

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms in the Evening, then mostly clear after midnight. Lows in the mid 50s. Light and variable Winds. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Marsh Island Temperature Statistics

August Temperature

Wiscasset Airport (14.3 miles)

  • Lowest 5 August, 2026

    57.9 °F

  • Average August

    74.8 °F

  • Highest 6 August, 2026

    90 °F

Climate (2021–2026)

Wiscasset Airport (14.3 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    58 °F
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