Harpswell Weather Forecast

    • 44
    • 61

    Rain

    • 44
    • 55

    Rain Likely

    • 48
    • 65

    Rain Showers Likely

    • 47
    • 62

    Chance Rain Showers

    • 48
    • 58

    Chance Rain Showers

    • 49
    • 61

    Chance Rain Showers

Today 29 May Coastal Cumberland

Mostly cloudy with isolated Showers this Morning, then partly sunny with a chance of rain this afternoon. Highs in the lower 60s. Light and variable Winds, becoming south around 10 Mph with Gusts up to 20 Mph this afternoon. Chance of rain 50 percent.

Tonight 29 May Coastal Cumberland

Rain with a slight chance of Thunderstorms. Lows in the lower 40s. Southeast Winds 10 to 15 Mph with Gusts up to 35 Mph, becoming east 15 to 25 Mph with Gusts up to 50 Mph after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Harpswell Temperature Statistics

May Temperature

Wiscasset Airport (17.4 miles)

  • Lowest 4 May, 2026

    33.1 °F

  • Average May

    56.9 °F

  • Highest 19 May, 2026

    91 °F

Climate (2021–Present)

Wiscasset Airport (17.4 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.4 °F

  • Average High 2021–2026

    57.8 °F
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