Barnstable Harbor - Tupper Island Weather Forecast

    • 62
    • 73

    Mostly Sunny

    • 63
    • 74

    Partly Sunny

    • 68
    • 75

    Chance Rain Showers

    • 63
    • 81

    Partly Sunny

    • 61
    • 73

    Mostly Sunny

    • 63
    • 72

    Mostly Sunny

Today 7 Sep Barnstable

Sunny. Highs in the lower 70s. Northwest Winds 5 to 10 Mph. Gusts up to 20 Mph in the morning.

Tonight 7 Sep Barnstable

Mostly clear. Near steady temperature in the upper 50s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Barnstable Harbor - Tupper Island Temperature Statistics

September Temperature

Hyannis, Barnstable Municipal-Boardman Airport (3.7 miles)

  • Lowest 2 September, 2026

    59 °F

  • Average September

    67.5 °F

  • Highest 4 September, 2026

    79 °F

Climate (2021–2026)

Hyannis, Barnstable Municipal-Boardman Airport (3.7 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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