Islesboro Island - Sprague Cove Weather Forecast

    • 58
    • 75

    Partly Sunny

    • 60
    • 73

    Partly Sunny

    • 62
    • 76

    Rain Showers Likely

    • 63
    • 76

    Rain Showers Likely

    • 62
    • 81

    Mostly Sunny

    • 63
    • 82

    Partly Sunny

Today 31 Jul Coastal Waldo

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

Tonight 31 Jul Coastal Waldo

Partly cloudy in the Evening, then clearing. Patchy fog after midnight. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Real-Time

Islesboro Island - Sprague Cove Temperature Statistics

July Temperature

Rockland, Knox County Regional Airport (21.1 miles)

  • Lowest 27 July, 2026

    44.1 °F

  • Average July

    68 °F

  • Highest 2 July, 2026

    91.9 °F

Climate (2021–2026)

Rockland, Knox County Regional Airport (21.1 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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