Dennis Weather Forecast

    • 48
    • 55

    Chance Rain Showers

    • 49
    • 58

    Rain Showers Likely

    • 52
    • 62

    Rain Showers

    • 46
    • 62

    Chance Rain Showers

    • 43
    • 58

    Slight Chance Rain Showers

    • 43
    • 56

    Chance Rain Showers

Today 28 Oct Barnstable

Partly sunny this Morning, then mostly cloudy with a slight chance of Showers this afternoon. Highs in the mid 50s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 28 Oct Barnstable

Cloudy with a 20 percent chance of Showers. Breezy. Near steady temperature around 50. Northeast Winds 15 to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dennis Temperature Statistics

October Temperature

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

  • Lowest 10 October, 2025

    35.1 °F

  • Average October

    57 °F

  • Highest 5 October, 2025

    79 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    59.8 °F
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