South Portland Weather Forecast

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    • 55

    Slight Chance Rain Showers

    • 39
    • 55

    Slight Chance Rain Showers

    • 39
    • 57

    Slight Chance Rain Showers

    • 39
    • 56

    Rain Showers

    • 44
    • 58

    Rain Showers Likely

    • 43
    • 58

    Rain Showers

    • 41
    • 58

    Rain Showers

Today 26 Oct Coastal Cumberland

Partly sunny with a 20 percent chance of Showers. Highs in the lower 50s. Northwest Winds around 10 Mph.

Tonight 26 Oct Coastal Cumberland

Mostly clear. A slight chance of rain Showers in the evening. Lows in the lower 30s. Northwest Winds around 10 Mph in the Evening, becoming light and variable. Chance of rain 20 percent.

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South Portland Temperature Statistics

October Temperature

Portland, Portland International Jetport (3.1 miles)

  • Lowest 10 October, 2025

    32 °F

  • Average October

    53.8 °F

  • Highest 6 October, 2025

    84.9 °F

Climate (2020–Present)

Portland, Portland International Jetport (3.1 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    49 °F

  • Average High 2020–2025

    57.4 °F
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