Flat Island Weather Forecast

    • 56
    • 69

    Partly Sunny

    • 55
    • 66

    Chance Rain Showers

    • 57
    • 63

    Chance Rain Showers

    • 57
    • 64

    Chance Rain Showers

Today 31 Aug Coastal Waldo

Patchy fog this morning. Sunny. Highs in the mid 70s. Light and variable Winds.

Tonight 31 Aug Coastal Waldo

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Flat Island Temperature Statistics

August Temperature

Rockland, Knox County Regional Airport (18.6 miles)

  • Lowest 16 August, 2026

    54 °F

  • Average August

    68.1 °F

  • Highest 6 August, 2026

    86 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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