South Yarmouth Weather Forecast

    • 37
    • 53

    Increasing Clouds

    • 38
    • 54

    Rain Showers

    • 35
    • 49

    Slight Chance Rain Showers

    • 29
    • 46

    Chance Rain Showers

    • 32
    • 40

    Mostly Sunny

    • 40
    • 49

    Partly Sunny

Today 4 Apr Barnstable

Partly sunny. Patchy fog this morning. Highs in the lower 50s. Temperature falling into the lower 40s this afternoon. Northwest Winds 10 to 15 Mph, becoming northeast this afternoon. Gusts up to 25 Mph.

Tonight 4 Apr Barnstable

Mostly cloudy. A chance of Showers after midnight. Patchy fog after midnight. Lows in the upper 30s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

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South Yarmouth Temperature Statistics

April Temperature

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

  • Lowest 1 April, 2026

    44.1 °F

  • Average April

    48.8 °F

  • Highest 1 April, 2026

    53.1 °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

    52.4 °F

  • Average High 2021–2026

    59.4 °F
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