Hyannis Port Weather Forecast

    • 60
    • 71

    Increasing Clouds

    • 59
    • 74

    Slight Chance Thunderstorms

    • 54
    • 67

    Partly Sunny

    • 53
    • 66

    Chance Rain Showers

    • 52
    • 63

    Chance Rain Showers

    • 54
    • 63

    Partly Sunny

Today 26 May Barnstable

Mostly sunny and not as cool. Near steady temperature around 70. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 26 May Barnstable

Partly cloudy in the Evening, then becoming mostly cloudy. Lows around 60. Southwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hyannis Port Temperature Statistics

May Temperature

Hyannis, Barnstable Municipal-Boardman Airport (3.1 miles)

  • Lowest 3 May, 2026

    37.9 °F

  • Average May

    56 °F

  • Highest 20 May, 2026

    79 °F

Climate (2021–Present)

Hyannis, Barnstable Municipal-Boardman Airport (3.1 miles)

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  • Average Low 2021–2026

    44.8 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    59.3 °F
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