Flat Island Weather Forecast

    • 38
    • 46

    Rain

    • 24
    • 39

    Mostly Sunny

    • 26
    • 39

    Rain/Snow

    • 28
    • 34

    Mostly Cloudy

    • 11
    • 38

    Chance Rain/Snow

    • 19
    • 24

    Chance Snow Showers

Today 30 Nov Coastal Waldo

Cloudy. A slight chance of snow this Morning, then rain likely with a chance of snow this afternoon. Highs in the lower 40s. Southeast Winds 10 to 15 Mph. Gusts up to 30 Mph this afternoon. Chance of precipitation 70 percent.

Tonight 30 Nov Coastal Waldo

Cloudy with rain in the Evening, then partly cloudy with a chance of rain after midnight. Lows in the mid 30s. South Winds 10 to 15 Mph, becoming southwest after midnight. Gusts up to 30 Mph. Chance of rain 90 percent.

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Flat Island Temperature Statistics

November Temperature

Rockland, Knox County Regional Airport (18.6 miles)

  • Lowest 21 November, 2025

    23 °F

  • Average November

    39.1 °F

  • Highest 8 November, 2025

    57 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    40 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    55.2 °F
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