Flat Island Weather Forecast

    • 36
    • 41

    Rain Likely

    • 34
    • 48

    Rain

    • 17
    • 38

    Chance Rain/Snow

    • 20
    • 28

    Partly Sunny

    • 30
    • 38

    Mostly Cloudy

    • 32
    • 45

    Mostly Cloudy

    • 27
    • 40

    Chance Snow

Today 25 Mar Coastal Waldo

Partly sunny. Highs in the lower 40s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 25 Mar Coastal Waldo

Mostly cloudy. A slight chance of rain this Evening, then rain and snow likely after midnight. Lows in the mid 30s. South Winds around 10 Mph. Gusts up to 25 Mph after midnight. Chance of precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Flat Island Temperature Statistics

March Temperature

Rockland, Knox County Regional Airport (18.6 miles)

  • Lowest 2 March, 2026

    3 °F

  • Average March

    33.9 °F

  • Highest 10 March, 2026

    57 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    54.9 °F
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