Swan River Mouth Weather Forecast

    • 72
    • 81

    Increasing Clouds

    • 73
    • 80

    Partly Sunny

    • 71
    • 82

    Mostly Sunny

    • 72
    • 80

    Partly Sunny

    • 70
    • 82

    Chance Rain Showers

    • 69
    • 79

    Slight Chance Rain Showers

    • 68
    • 79

    Partly Sunny

Today 7 Aug Barnstable

Sunny. Near steady temperature in the lower 80s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 7 Aug Barnstable

Partly cloudy this Evening, then mostly cloudy with a slight chance of Showers with isolated Thunderstorms after midnight. Patchy fog after midnight. Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Swan River Mouth Temperature Statistics

August Temperature

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

  • Lowest 5 August, 2026

    60.1 °F

  • Average August

    74.3 °F

  • Highest 4 August, 2026

    82.9 °F

Climate (2021–2026)

Hyannis, Barnstable Municipal-Boardman Airport (5.6 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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