Hyannis Port Weather Forecast

    • 66
    • 76

    Mostly Sunny

    • 66
    • 76

    Partly Sunny

    • 63
    • 76

    Chance Rain Showers

    • 60
    • 76

    Mostly Sunny

    • 60
    • 73

    Mostly Sunny

    • 61
    • 74

    Mostly Sunny

Today 23 Aug Barnstable

Sunny. Highs in the upper 70s. South Winds 10 to 15 Mph. Gusts up to 25 Mph in the afternoon.

Tonight 23 Aug Barnstable

Mostly clear. Lows in the mid 60s. South Winds 10 to 15 Mph.

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Hyannis Port Temperature Statistics

August Temperature

Hyannis, Barnstable Municipal-Boardman Airport (3.1 miles)

  • Lowest 19 August, 2025

    45.6 °F

  • Average August

    68.1 °F

  • Highest 12 August, 2025

    89.7 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (3.1 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    52.9 °F

  • Average High 2020–2025

    59.9 °F
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