Islesboro Island - Billys Shore Weather Forecast

    • 38
    • 50

    Rain/Sleet

    • 48
    • 54

    Rain

    • 47
    • 59

    Chance Rain Showers

    • 44
    • 59

    Chance Rain Showers

    • 46
    • 54

    Chance Rain Showers

    • 44
    • 62

    Slight Chance Rain Showers

Today 12 Apr Coastal Waldo

Mostly sunny. Highs in the lower 50s. Northwest Winds around 10 Mph this Morning, becoming light and variable.

Tonight 12 Apr Coastal Waldo

Cloudy. Rain after midnight. Lows in the upper 30s. Light and variable Winds, becoming south around 10 Mph with Gusts up to 25 Mph after midnight. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Islesboro Island - Billys Shore Temperature Statistics

April Temperature

Rockland, Knox County Regional Airport (20.5 miles)

  • Lowest 7 April, 2026

    24.1 °F

  • Average April

    38.4 °F

  • Highest 1 April, 2026

    52 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (20.5 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.9 °F
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