Christina River - Copper Island Weather Forecast

    • 62
    • 83

    Mostly Cloudy

    • 62
    • 75

    Rain Showers Likely

    • 63
    • 71

    Rain Showers Likely

    • 62
    • 80

    Slight Chance Rain Showers

    • 61
    • 86

    Mostly Sunny

    • 58
    • 77

    Partly Sunny

    • 58
    • 76

    Partly Sunny

Today 15 Sep New Castle

Mostly cloudy. Near steady temperature in the upper 70s. East Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 15 Sep New Castle

Mostly cloudy. Lows in the lower 60s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Christina River - Copper Island Temperature Statistics

September Temperature

Wilmington, New Castle County Airport (3.1 miles)

  • Lowest 9 September, 2025

    53.1 °F

  • Average September

    70 °F

  • Highest 6 September, 2025

    91 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (3.1 miles)

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  • Average Low 2020–2025

    48.1 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    66.6 °F
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