Plymouth Weather Forecast

    • 45
    • 77

    Increasing Clouds

    • 50
    • 72

    Partly Sunny

    • 62
    • 85

    Chance Rain Showers

    • 50
    • 84

    Chance Thunderstorms

    • 42
    • 64

    Partly Sunny

    • 43
    • 65

    Partly Sunny

Today 17 May Southern Penobscot

Mostly sunny. Highs in the mid 70s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 17 May Southern Penobscot

Mostly cloudy with scattered Showers. Not as cool. Near steady temperature in the upper 50s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Plymouth Temperature Statistics

May Temperature

Bangor, Bangor International Airport (19.3 miles)

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    49 °F

  • Highest 5 May, 2026

    68.6 °F

Climate (2021–Present)

Bangor, Bangor International Airport (19.3 miles)

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  • Average Low 2021–2026

    37.3 °F

  • Average 2021–2026

    47.1 °F

  • Average High 2021–2026

    56.7 °F
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