Bass River - South Yarmouth Weather Forecast

    • 32
    • 41

    Increasing Clouds

    • 23
    • 45

    Partly Sunny

    • 24
    • 34

    Partly Sunny

    • 30
    • 42

    Rain

    • 26
    • 40

    Partly Sunny

    • 35
    • 44

    Chance Rain

Today 20 Dec Barnstable

Sunny, Blustery, cooler with Highs in the lower 40s. West Winds 20 to 25 Mph with Gusts up to 40 Mph, Diminishing to 10 to 15 Mph with Gusts up to 25 Mph in the afternoon.

Tonight 20 Dec Barnstable

Mostly clear and Windy, cooler. Near steady temperature around 30. West Winds 20 to 30 Mph with Gusts up to 45 Mph.

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Bass River - South Yarmouth Temperature Statistics

December Temperature

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

  • Lowest 15 December, 2025

    12.9 °F

  • Average December

    33 °F

  • Highest 2 December, 2025

    50 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

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  • Average Low 2020–2025

    45.1 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    59.7 °F
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