South Yarmouth Weather Forecast

    • 38
    • 54

    Rain Showers

    • 35
    • 50

    Slight Chance Rain Showers

    • 30
    • 47

    Chance Rain Showers

    • 33
    • 41

    Mostly Sunny

    • 41
    • 48

    Partly Sunny

    • 41
    • 54

    Partly Sunny

Today 5 Apr Barnstable

Cloudy. A slight chance of Showers this Morning, then Showers with isolated Thunderstorms this afternoon. Patchy fog. Visibility one quarter mile or less at Times. Highs in the mid 50s. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 90 percent.

Tonight 5 Apr Barnstable

Mostly cloudy. Showers in the evening. Patchy fog in the evening. Lows in the upper 30s. Southwest Winds 10 to 15 Mph, becoming west after midnight. Gusts up to 30 Mph. Chance of rain 90 percent.

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South Yarmouth Temperature Statistics

April Temperature

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

  • Lowest 2 April, 2026

    37.9 °F

  • Average April

    45.4 °F

  • Highest 3 April, 2026

    55.9 °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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