Back River Mouth Weather Forecast

    • 26
    • 44

    Mostly Sunny

    • 29
    • 34

    Partly Sunny

    • 33
    • 39

    Rain/Snow

    • 28
    • 37

    Breezy

    • 34
    • 40

    Mostly Cloudy

    • 32
    • 41

    Chance Rain

Today 21 Dec Eastern Plymouth

Mostly sunny. Highs in the mid 40s. Temperature falling into the upper 30s in the afternoon. Southwest Winds 15 to 20 Mph, becoming west in the afternoon. Gusts up to 40 Mph.

Tonight 21 Dec Eastern Plymouth

Partly cloudy. Lows in the lower 20s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Back River Mouth Temperature Statistics

December Temperature

Marshfield Airport (3.1 miles)

  • Lowest 5 December, 2025

    12.2 °F

  • Average December

    31.6 °F

  • Highest 10 December, 2025

    50 °F

Climate (2020–Present)

Marshfield Airport (3.1 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    60.4 °F
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