Plymouth Weather Forecast

    • 39
    • 66

    Chance Rain Showers

    • 43
    • 65

    Chance Rain Showers

    • 43
    • 70

    Chance Rain Showers

    • 47
    • 73

    Partly Sunny

Today 31 May Southern Penobscot

Mostly sunny in the Morning, then partly sunny with scattered Showers with isolated Thunderstorms in the afternoon. Highs in the mid 60s. Northeast Winds around 5 Mph. Chance of rain 50 percent.

Tonight 31 May Southern Penobscot

Mostly cloudy. Patchy fog and frost. Near steady temperature in the upper 30s. Light and variable Winds.

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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

    54.8 °F

  • Highest 19 May, 2026

    89.7 °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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