Dennis Port Weather Forecast

    • 68
    • 76

    Slight Chance Thunderstorms

    • 67
    • 79

    Partly Sunny

    • 66
    • 82

    Mostly Sunny

    • 66
    • 81

    Chance Rain Showers

    • 67
    • 78

    Rain Showers Likely

    • 67
    • 81

    Partly Sunny

    • 67
    • 80

    Mostly Sunny

Today 18 Jun Barnstable

Mostly cloudy with a slight chance of Showers and Thunderstorms. Breezy. Near steady temperature in the mid 70s. South Winds 15 to 25 Mph with Gusts up to 45 Mph. Chance of rain 20 percent.

Tonight 18 Jun Barnstable

Mostly cloudy. A slight chance of Showers and Thunderstorms in the evening. Patchy fog in the evening. Breezy with Lows in the upper 60s. Southwest Winds 20 to 25 Mph with Gusts up to 40 Mph, Diminishing to 10 to 15 Mph after midnight. Chance of rain 20 percent.

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Dennis Port Temperature Statistics

June Temperature

Chatham, Chatham Municipal Airport (6.8 miles)

  • Lowest 2 June, 2026

    42.1 °F

  • Average June

    64.9 °F

  • Highest 13 June, 2026

    84 °F

Climate (2021–2026)

Chatham, Chatham Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    59.8 °F
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