Delaware City Weather Forecast

    • 65
    • 82

    Increasing Clouds

    • 66
    • 83

    Mostly Sunny

    • 70
    • 83

    Mostly Sunny

    • 75
    • 86

    Mostly Sunny

    • 76
    • 89

    Slight Chance Thunderstorms

    • 76
    • 88

    Chance Thunderstorms

    • 74
    • 87

    Chance Rain Showers

Today 9 Aug New Castle

Sunny. Highs in the lower 80s. Northeast Winds around 5 Mph.

Tonight 9 Aug New Castle

Clear in the Evening, then becoming partly cloudy. Lows around 60. Southeast Winds around 5 Mph, becoming north after midnight.

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Delaware City Temperature Statistics

August Temperature

Wilmington, New Castle County Airport (6.2 miles)

  • Lowest 3 August, 2025

    59.6 °F

  • Average August

    73.7 °F

  • Highest 4 August, 2025

    87.7 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (6.2 miles)

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  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    66.5 °F
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