Fort Dupont State Park Weather Forecast

    • 67
    • 80

    Mostly Sunny

    • 71
    • 80

    Mostly Sunny

Today 11 Sep New Castle

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms in the Morning, then partly sunny in the afternoon. Highs in the lower 80s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 11 Sep New Castle

Partly cloudy. Lows in the lower 60s. Southwest Winds around 5 Mph, becoming east after midnight.

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Fort Dupont State Park Temperature Statistics

September Temperature

Wilmington, New Castle County Airport (7.5 miles)

  • Lowest 8 September, 2026

    55.9 °F

  • Average September

    76.5 °F

  • Highest 1 September, 2026

    93.7 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (7.5 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    66.7 °F
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