South Harpswell Weather Forecast

    • 37
    • 43

    Increasing Clouds

    • 36
    • 48

    Rain

    • 19
    • 40

    Chance Rain

    • 25
    • 31

    Partly Sunny

    • 32
    • 38

    Partly Sunny

    • 36
    • 46

    Partly Sunny

Today 25 Mar Coastal Cumberland

Partly sunny. Highs in the upper 40s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 25 Mar Coastal Cumberland

Partly cloudy in the Evening, then cloudy with a chance of rain after midnight. Lows in the lower 30s. South Winds around 10 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Harpswell Temperature Statistics

March Temperature

Portland, Portland International Jetport (15.5 miles)

  • Lowest 2 March, 2026

    4.6 °F

  • Average March

    34.8 °F

  • Highest 10 March, 2026

    67.6 °F

Climate (2021–Present)

Portland, Portland International Jetport (15.5 miles)

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  • Average Low 2021–2026

    40.2 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    57.2 °F
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