Yarmouth Port Weather Forecast

    • 61
    • 73

    Rain Showers Likely

    • 61
    • 74

    Chance Rain Showers

    • 56
    • 75

    Mostly Sunny

    • 45
    • 68

    Mostly Sunny

    • 55
    • 68

    Partly Sunny

    • 59
    • 72

    Partly Sunny

    • 60
    • 75

    Partly Sunny

Today 17 Sep Barnstable

Partly sunny with a 50 percent chance of Showers. Near steady temperature around 70. East Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 17 Sep Barnstable

Mostly cloudy. A chance of Showers with isolated Thunderstorms this Evening, then a chance of Showers and Thunderstorms after midnight. Patchy fog after midnight. Lows in the lower 60s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

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Yarmouth Port Temperature Statistics

September Temperature

Hyannis, Barnstable Municipal-Boardman Airport (3.7 miles)

  • Lowest 13 September, 2025

    44.1 °F

  • Average September

    64.1 °F

  • Highest 6 September, 2025

    77 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (3.7 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    59.9 °F
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