Dennis Port Weather Forecast

    • 58
    • 67

    Patchy Fog

    • 62
    • 73

    Partly Sunny

    • 54
    • 74

    Chance Rain Showers

    • 51
    • 65

    Partly Sunny

    • 51
    • 63

    Chance Rain Showers

    • 52
    • 63

    Rain Showers Likely

Today 18 May Barnstable

Sunny. Near steady temperature in the upper 60s. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 18 May Barnstable

Partly cloudy. Patchy fog. Lows in the upper 50s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dennis Port Temperature Statistics

May Temperature

Chatham, Chatham Municipal Airport (6.8 miles)

  • Lowest 8 May, 2026

    42.1 °F

  • Average May

    52.6 °F

  • Highest 6 May, 2026

    63 °F

Climate (2021–Present)

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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