South Yarmouth Weather Forecast

    • 73
    • 85

    Partly Sunny

    • 72
    • 87

    Partly Sunny

    • 73
    • 86

    Partly Sunny

    • 73
    • 87

    Mostly Sunny

    • 72
    • 85

    Partly Sunny

    • 70
    • 85

    Chance Rain Showers

Today 6 Aug Barnstable

Mostly cloudy this Morning, then clearing. Patchy fog this morning. Highs in the lower 80s. Southwest Winds 10 to 15 Mph.

Tonight 6 Aug Barnstable

Partly cloudy. Patchy fog after midnight. Humid with Lows in the lower 70s. Southwest Winds 10 to 15 Mph.

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South Yarmouth Temperature Statistics

August Temperature

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

  • Lowest 1 August, 2026

    68 °F

  • Average August

    74.6 °F

  • Highest 1 August, 2026

    79 °F

Climate (2021–2026)

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

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  • Average Low 2021–2026

    44.8 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    59.3 °F
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