Delaware Seashore State Park Weather Forecast

    • 67
    • 72

    Rain Showers

    • 68
    • 74

    Chance Rain Showers

    • 68
    • 79

    Mostly Sunny

    • 66
    • 71

    Partly Sunny

    • 67
    • 71

    Partly Sunny

    • 67
    • 72

    Partly Sunny

Today 17 Sep Delaware Beaches

Mostly cloudy in the Morning, then becoming partly sunny. A chance of Showers. A slight chance of Thunderstorms in the Morning, then a chance of Thunderstorms in the afternoon. Humid with Highs in the mid 70s. East Winds 15 to 20 Mph. Chance of rain 50 percent.

Tonight 17 Sep Delaware Beaches

Showers with a chance of Thunderstorms. Windy. Near steady temperature in the upper 60s. East Winds 20 to 30 Mph with Gusts up to 40 Mph. Chance of rain 90 percent.

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Delaware Seashore State Park Temperature Statistics

September Temperature

Georgetown - Delaware Coastal Airport (15.5 miles)

  • Lowest 9 September, 2025

    52 °F

  • Average September

    68.2 °F

  • Highest 6 September, 2025

    91.9 °F

Climate (2020–Present)

Georgetown - Delaware Coastal Airport (15.5 miles)

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  • Average Low 2020–2025

    49.3 °F

  • Average 2020–2025

    58.8 °F

  • Average High 2020–2025

    68.5 °F
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