Dennis Weather Forecast

    • 52
    • 60

    Cloudy

    • 54
    • 54

    Rain Showers

    • 55
    • 71

    Rain Showers Likely

    • 57
    • 70

    Mostly Cloudy

    • 54
    • 72

    Slight Chance Rain Showers

    • 52
    • 65

    Partly Sunny

Today 23 May Barnstable

Cloudy. Highs around 60. East Winds 5 to 10 Mph.

Tonight 23 May Barnstable

Cloudy. Near steady temperature in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dennis Temperature Statistics

May Temperature

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

  • Lowest 3 May, 2026

    37.9 °F

  • Average May

    56.1 °F

  • Highest 20 May, 2026

    79 °F

Climate (2021–Present)

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

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  • Average Low 2021–2026

    44.9 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    59.3 °F
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