South Yarmouth Weather Forecast

    • 27
    • 36

    Becoming Sunny

    • 36
    • 44

    Partly Sunny

    • 40
    • 50

    Mostly Cloudy

    • 44
    • 52

    Slight Chance Rain

    • 36
    • 54

    Rain Likely

    • 34
    • 43

    Chance Rain

Today 28 Mar Barnstable

Partly sunny. Cooler with Highs in the mid 30s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 28 Mar Barnstable

Partly cloudy and much cooler. Near steady temperature around 30. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

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South Yarmouth Temperature Statistics

March Temperature

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

  • Lowest 2 March, 2026

    12.9 °F

  • Average March

    38.6 °F

  • Highest 9 March, 2026

    63 °F

Climate (2021–Present)

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

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  • Average Low 2021–2026

    44.9 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    59.4 °F
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