Saco River - Thunder Island Weather Forecast

    • 55
    • 79

    Slight Chance Rain Showers

    • 60
    • 76

    Rain Showers

    • 59
    • 86

    Mostly Sunny

    • 58
    • 80

    Partly Sunny

    • 58
    • 80

    Chance Rain Showers

    • 57
    • 77

    Chance Rain Showers

Today 17 Jun Coastal York

Mostly sunny. Highs in the upper 70s. Light and variable Winds, becoming southeast around 10 Mph this afternoon.

Tonight 17 Jun Coastal York

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

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Saco River - Thunder Island Temperature Statistics

June Temperature

Portland, Portland International Jetport (12.4 miles)

  • Lowest 2 June, 2026

    41.6 °F

  • Average June

    66.2 °F

  • Highest 10 June, 2026

    86.6 °F

Climate (2021–2026)

Portland, Portland International Jetport (12.4 miles)

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  • Average Low 2021–2026

    40 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    57.2 °F
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