Lewis Bay Weather Forecast

    • 62
    • 78

    Decreasing Clouds

    • 58
    • 75

    Mostly Sunny

    • 69
    • 76

    Rain Showers Likely

    • 68
    • 79

    Chance Rain Showers

    • 68
    • 76

    Mostly Sunny

    • 71
    • 78

    Partly Sunny

    • 68
    • 79

    Chance Rain Showers

Today 14 Aug Barnstable

Mostly sunny. Near steady temperature in the upper 70s. West Winds 5 to 10 Mph.

Tonight 14 Aug Barnstable

Mostly cloudy this Evening, then clearing. Lows in the lower 60s. Southwest Winds around 5 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewis Bay Temperature Statistics

August Temperature

Hyannis, Barnstable Municipal-Boardman Airport (2.5 miles)

  • Lowest 5 August, 2026

    60.1 °F

  • Average August

    76.5 °F

  • Highest 7 August, 2026

    88 °F

Climate (2021–2026)

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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