Great Marsh Preserve Weather Forecast

    • 27
    • 40

    Chance Flurries

    • 20
    • 37

    Partly Sunny

    • 25
    • 42

    Partly Sunny

    • 24
    • 39

    Partly Sunny

    • 27
    • 39

    Partly Sunny

    • 30
    • 45

    Mostly Cloudy

Today 31 Dec Inland Sussex

Mostly cloudy with a slight chance of Flurries in the Morning, then mostly sunny in the afternoon. Highs in the upper 30s. Southwest Winds 10 to 15 Mph.

Tonight 31 Dec Inland Sussex

Mostly cloudy with a 20 percent chance of snow Showers. Cold. Near steady temperature in the mid 20s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Real-Time

Great Marsh Preserve Temperature Statistics

December Temperature

Georgetown - Delaware Coastal Airport (11.8 miles)

  • Lowest 14 December, 2025

    18 °F

  • Average December

    36.3 °F

  • Highest 19 December, 2025

    61 °F

Climate (2020–Present)

Georgetown - Delaware Coastal Airport (11.8 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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