Osterville Weather Forecast

    • 61
    • 70

    Rain Showers Likely

    • 63
    • 70

    Chance Rain Showers

    • 63
    • 73

    Breezy

    • 65
    • 76

    Mostly Sunny

    • 66
    • 75

    Chance Rain Showers

    • 64
    • 75

    Chance Rain Showers

Today 20 Aug Barnstable

Partly sunny this Morning, then mostly cloudy with a chance of Showers this afternoon. Highs in the lower 70s. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 20 Aug Barnstable

Showers Likely, mainly in the evening. Patchy fog. Lows around 60. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Osterville Temperature Statistics

August Temperature

Hyannis, Barnstable Municipal-Boardman Airport (6.2 miles)

  • Lowest 9 August, 2025

    49.6 °F

  • Average August

    69.4 °F

  • Highest 12 August, 2025

    89.7 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (6.2 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    52.9 °F

  • Average High 2020–2025

    59.9 °F
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