South Harpswell Weather Forecast

    • 65
    • 72

    Chance Rain Showers

    • 66
    • 75

    Slight Chance Thunderstorms

    • 65
    • 75

    Partly Sunny

    • 64
    • 76

    Slight Chance Rain Showers

    • 63
    • 73

    Slight Chance Rain Showers

    • 62
    • 72

    Chance Rain Showers

Today 8 Aug Coastal Cumberland

Mostly cloudy in the Morning, then becoming partly sunny. Patchy fog in the morning. A chance of Showers. Isolated Thunderstorms in the Morning, then scattered Thunderstorms in the afternoon. Humid with Highs around 80. Light and variable Winds. Chance of rain 50 percent.

Tonight 8 Aug Coastal Cumberland

Cloudy with isolated Showers and Thunderstorms. Patchy fog. Lows in the lower 70s. Light and variable Winds. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Harpswell Temperature Statistics

August Temperature

Portland, Portland International Jetport (15.5 miles)

  • Lowest 5 August, 2026

    57.9 °F

  • Average August

    72.3 °F

  • Highest 4 August, 2026

    86.6 °F

Climate (2021–2026)

Portland, Portland International Jetport (15.5 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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