Cape Henlopen State Park Weather Forecast

    • 25
    • 50

    Mostly Sunny

    • 30
    • 42

    Partly Sunny

    • 36
    • 51

    Chance Rain

    • 34
    • 47

    Mostly Cloudy

    • 39
    • 49

    Chance Rain

    • 37
    • 55

    Mostly Cloudy

Today 21 Dec Delaware Beaches

Mostly sunny. Highs around 50. Temperature falling into the mid 40s in the afternoon. West Winds 15 to 20 Mph.

Tonight 21 Dec Delaware Beaches

Mostly clear. Cold with Lows in the mid 20s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

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Cape Henlopen State Park Temperature Statistics

December Temperature

Georgetown - Delaware Coastal Airport (14.9 miles)

  • Lowest 14 December, 2025

    18 °F

  • Average December

    34.1 °F

  • Highest 18 December, 2025

    60.1 °F

Climate (2020–Present)

Georgetown - Delaware Coastal Airport (14.9 miles)

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  • Average Low 2020–2025

    49.2 °F

  • Average 2020–2025

    58.7 °F

  • Average High 2020–2025

    68.3 °F
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