South Yarmouth Weather Forecast

    • 27
    • 42

    Sunny

    • 36
    • 47

    Mostly Sunny

    • 42
    • 51

    Slight Chance Rain Showers

    • 39
    • 51

    Mostly Sunny

    • 41
    • 48

    Mostly Cloudy

    • 48
    • 54

    Slight Chance Rain Showers

    • 48
    • 58

    Mostly Cloudy

Today 8 Apr Barnstable

Sunny. Near steady temperature in the lower 40s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 8 Apr Barnstable

Clear, cold with Lows in the lower 20s. East Winds around 5 Mph.

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South Yarmouth Temperature Statistics

April Temperature

Hyannis, Barnstable Municipal-Boardman Airport (4.3 miles)

  • Lowest 6 April, 2026

    37 °F

  • Average April

    45.7 °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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