South Dennis Weather Forecast

    • 30
    • 46

    Decreasing Clouds

    • 40
    • 49

    Rain Likely

    • 26
    • 54

    Rain

    • 32
    • 42

    Mostly Cloudy

    • 25
    • 47

    Partly Sunny

    • 22
    • 33

    Partly Sunny

Today 17 Dec Barnstable

Partly sunny. Near steady temperature in the mid 40s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 17 Dec Barnstable

Mostly clear. Lows in the lower 30s. West Winds 10 to 15 Mph. Gusts up to 30 Mph, decreasing to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Dennis Temperature Statistics

December Temperature

Hyannis, Barnstable Municipal-Boardman Airport (6.2 miles)

  • Lowest 15 December, 2025

    12.9 °F

  • Average December

    32.8 °F

  • Highest 2 December, 2025

    50 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (6.2 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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