South Dennis Weather Forecast

    • 60
    • 81

    Sunny

    • 65
    • 84

    Mostly Sunny

    • 64
    • 82

    Partly Sunny

    • 64
    • 78

    Mostly Cloudy

    • 63
    • 79

    Partly Sunny

    • 65
    • 79

    Mostly Sunny

    • 67
    • 81

    Mostly Sunny

Today 3 Aug Barnstable

Sunny. Near steady temperature in the mid 70s. Southeast Winds 5 to 10 Mph.

Tonight 3 Aug Barnstable

Clear. Lows around 60. Southwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

South Dennis Temperature Statistics

August Temperature

Hyannis, Barnstable Municipal-Boardman Airport (6.2 miles)

  • Lowest 1 August, 2025

    55.9 °F

  • Average August

    63.1 °F

  • Highest 1 August, 2025

    68 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (6.2 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    52.9 °F

  • Average High 2020–2025

    59.9 °F
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