Dennis Weather Forecast

    • 29
    • 43

    Snow

    • 19
    • 35

    Snow

    • 22
    • 30

    Slight Chance Snow

    • 28
    • 36

    Partly Sunny

    • 33
    • 46

    Partly Sunny

    • 37
    • 49

    Rain Likely

    • 25
    • 50

    Chance Rain

Today 13 Dec Barnstable

Cloudy with a 20 percent chance of rain. Near steady temperature in the lower 40s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 13 Dec Barnstable

A slight chance of rain this Evening, then snow with a chance of rain after midnight. Snow accumulation around an inch. Lows in the upper 20s. West Winds 5 to 10 Mph. Gusts up to 20 Mph this evening. Chance of precipitation near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dennis Temperature Statistics

December Temperature

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

  • Lowest 5 December, 2025

    14 °F

  • Average December

    34.5 °F

  • Highest 2 December, 2025

    50 °F

Climate (2020–Present)

Hyannis, Barnstable Municipal-Boardman Airport (5.6 miles)

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  • Average Low 2020–2025

    45.1 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    59.7 °F
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