South Yarmouth Weather Forecast

    • 64
    • 73

    Chance Rain Showers

    • 62
    • 78

    Partly Sunny

    • 61
    • 79

    Mostly Sunny

    • 62
    • 77

    Partly Sunny

    • 60
    • 73

    Rain Showers Likely

    • 62
    • 76

    Partly Sunny

Today 18 Jun Barnstable

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the afternoon. Breezy with Highs in the lower 70s. South Winds 15 to 25 Mph. Gusts up to 30 Mph, increasing to 45 Mph in the afternoon. Chance of rain 40 percent.

Tonight 18 Jun Barnstable

Mostly cloudy. Near steady temperature around 60. South Winds 5 to 10 Mph.

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South Yarmouth Temperature Statistics

June Temperature

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

  • Lowest 2 June, 2026

    37 °F

  • Average June

    66.7 °F

  • Highest 12 June, 2026

    84 °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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