Hyannis Port Weather Forecast

    • 51
    • 58

    Increasing Clouds

    • 53
    • 62

    Mostly Cloudy

    • 51
    • 63

    Rain Showers

    • 50
    • 63

    Chance Rain Showers

    • 55
    • 66

    Mostly Sunny

    • 54
    • 69

    Partly Sunny

Today 12 May Barnstable

Sunny. Highs in the upper 50s. North Winds around 10 Mph with Gusts up to 20 Mph, becoming northeast this afternoon.

Tonight 12 May Barnstable

Mostly clear in the Evening, then becoming partly cloudy. Lows around 50. Southwest Winds 5 to 10 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

    53.3 °F

  • Highest 10 May, 2026

    64 °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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