Lewis Bay Weather Forecast

    • 27
    • 45

    Becoming Sunny

    • 32
    • 34

    Partly Sunny

    • 35
    • 40

    Rain

    • 31
    • 39

    Mostly Cloudy

    • 36
    • 41

    Chance Rain

    • 31
    • 42

    Chance Rain

Today 21 Dec Barnstable

Mostly sunny. Highs in the mid 40s. Temperature falling into the upper 30s this afternoon. Southwest Winds 15 to 20 Mph, becoming west this afternoon. Gusts up to 35 Mph.

Tonight 21 Dec Barnstable

Partly cloudy. Lows in the mid 20s. Northwest Winds 15 to 20 Mph with Gusts up to 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewis Bay Temperature Statistics

December Temperature

Hyannis, Barnstable Municipal-Boardman Airport (2.5 miles)

  • Lowest 15 December, 2025

    12.9 °F

  • Average December

    34.1 °F

  • Highest 19 December, 2025

    54 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (2.5 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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