Barnstable Weather Forecast

    • 50
    • 62

    Mostly Sunny

    • 54
    • 65

    Slight Chance Rain Showers

    • 50
    • 66

    Rain Showers

    • 50
    • 62

    Chance Rain Showers

    • 56
    • 71

    Mostly Sunny

    • 55
    • 75

    Mostly Sunny

    • 55
    • 70

    Mostly Cloudy

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 this Evening, then becoming partly cloudy. Lows in the upper 40s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Barnstable Temperature Statistics

May Temperature

Hyannis, Barnstable Municipal-Boardman Airport (2.5 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 (2.5 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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