Flat Island Weather Forecast

    • 40
    • 61

    Partly Sunny

    • 34
    • 49

    Sunny

    • 41
    • 52

    Mostly Sunny

    • 48
    • 58

    Mostly Sunny

    • 43
    • 65

    Partly Sunny

    • 40
    • 56

    Partly Sunny

Today 26 Oct Coastal Waldo

Patchy fog this morning. Partly sunny. Highs in the mid 60s. Light and variable Winds.

Tonight 26 Oct Coastal Waldo

Partly cloudy in the Evening, then clearing. Lows in the lower 30s. North Winds around 10 Mph with Gusts up to 20 Mph.

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Flat Island Temperature Statistics

October Temperature

Rockland, Knox County Regional Airport (18.6 miles)

  • Lowest 24 October, 2026

    27 °F

  • Average October

    51.6 °F

  • Highest 2 October, 2026

    72 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    47.5 °F

  • Average High 2021–2026

    54.8 °F
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