Flat Island Weather Forecast

    • 56
    • 70

    Areas Fog

    • 63
    • 66

    Rain Showers

    • 60
    • 75

    Mostly Cloudy

    • 58
    • 74

    Chance Rain Showers

    • 56
    • 70

    Mostly Sunny

    • 60
    • 72

    Partly Sunny

    • 63
    • 75

    Chance Rain Showers

Today 30 Jun Coastal Waldo

Mostly sunny. Highs in the lower 80s. Light and variable Winds, becoming south around 10 Mph with Gusts up to 20 Mph this afternoon.

Tonight 30 Jun Coastal Waldo

Mostly clear this Evening, then becoming partly cloudy. Areas of fog after midnight. Lows in the upper 50s. South Winds around 10 Mph this Evening, becoming light and variable.

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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 3 June, 2025

    39.9 °F

  • Average June

    61.7 °F

  • Highest 24 June, 2025

    93 °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

    55.3 °F
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