Biddeford Weather Forecast

    • 70
    • 87

    Increasing Clouds

    • 69
    • 90

    Partly Sunny

    • 70
    • 90

    Chance Thunderstorms

    • 67
    • 92

    Mostly Sunny

    • 66
    • 90

    Slight Chance Rain Showers

    • 63
    • 86

    Chance Rain Showers

Today 6 Aug Coastal York

Mostly sunny. Warm with Highs in the mid 80s. Light and variable Winds, becoming south around 10 Mph this afternoon. Heat index Values in the mid 90s this afternoon.

Tonight 6 Aug Coastal York

Partly cloudy. A slight chance of Showers in the evening. Patchy fog. Humid with Lows around 70. Light and variable Winds. Chance of rain 20 percent. Heat index Values around 90 early in the evening.

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Biddeford Temperature Statistics

August Temperature

Portland, Portland International Jetport (12.4 miles)

  • Lowest 1 August, 2026

    61.6 °F

  • Average August

    72.1 °F

  • Highest 4 August, 2026

    86 °F

Climate (2021–2026)

Portland, Portland International Jetport (12.4 miles)

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  • Average Low 2021–2026

    40.1 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    57.3 °F
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