South Portland Weather Forecast

    • 45
    • 60

    Chance Rain

    • 44
    • 56

    Rain

    • 44
    • 53

    Chance Rain Showers

    • 45
    • 65

    Partly Sunny

    • 54
    • 66

    Chance Rain Showers

    • 42
    • 67

    Slight Chance Rain Showers

Today 25 Apr Coastal Cumberland

Partly sunny. Patchy fog in the morning. A chance of Showers in the afternoon. Highs in the mid 60s. Light and variable Winds. Chance of rain 30 percent.

Tonight 25 Apr Coastal Cumberland

Partly cloudy with a 50 percent chance of Showers. Patchy fog. Lows in the lower 40s. Light and variable Winds.

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South Portland Temperature Statistics

April Temperature

Portland, Portland International Jetport (3.1 miles)

  • Lowest 10 April, 2025

    23.8 °F

  • Average April

    43 °F

  • Highest 19 April, 2025

    79.6 °F

Climate (2020–Present)

Portland, Portland International Jetport (3.1 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    49 °F

  • Average High 2020–2025

    57.4 °F
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