Flat Island Weather Forecast

    • 53
    • 70

    Mostly Sunny

    • 57
    • 72

    Mostly Sunny

    • 55
    • 71

    Chance Rain Showers

    • 54
    • 68

    Chance Rain Showers

    • 55
    • 67

    Chance Rain Showers

    • 56
    • 70

    Slight Chance Rain Showers

Today 8 Jun Coastal Waldo

Mostly sunny. Highs in the upper 70s. North Winds around 10 Mph.

Tonight 8 Jun Coastal Waldo

Mostly clear. Lows in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Flat Island Temperature Statistics

June Temperature

Rockland, Knox County Regional Airport (18.6 miles)

  • Lowest 2 June, 2026

    37.9 °F

  • Average June

    56.3 °F

  • Highest 5 June, 2026

    75.9 °F

Climate (2021–Present)

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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