New Castle Weather Forecast

    • 53
    • 59

    Rain

    • 50
    • 65

    Rain

    • 46
    • 58

    Partly Sunny

    • 43
    • 59

    Partly Sunny

    • 43
    • 58

    Slight Chance Rain Showers

    • 48
    • 61

    Chance Rain Showers

Today 29 Oct New Castle

Mostly cloudy. Highs in the upper 50s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 29 Oct New Castle

Mostly cloudy. A chance of Showers in the Evening, then rain after midnight. Lows in the lower 50s. Northeast Winds 15 to 20 Mph. Chance of rain 90 percent.

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New Castle Temperature Statistics

October Temperature

Wilmington, New Castle County Airport (1.9 miles)

  • Lowest 26 October, 2025

    36 °F

  • Average October

    59.2 °F

  • Highest 7 October, 2025

    80.6 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (1.9 miles)

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  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    66.6 °F
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