New Castle Airport Weather Forecast

    • 15
    • 31

    Chance Snow

    • 19
    • 30

    Mostly Cloudy

    • 24
    • 35

    Partly Sunny

    • 28
    • 46

    Partly Sunny

    • 42
    • 51

    Rain

    • 25
    • 46

    Partly Sunny

Today 14 Dec New Castle

Snow this Morning, then partly sunny this afternoon. Areas of blowing snow. Snow may be heavy at Times this morning. Snow accumulation of 1 to 3 Inches. Colder with Highs in the lower 30s. Temperature falling into the lower 20s this afternoon. Northwest Winds 15 to 20 Mph. Gusts up to 40 Mph this afternoon. Chance of snow near 100 percent.

Tonight 14 Dec New Castle

Mostly clear. Colder with Lows around 15. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Wind chill Values as low as zero.

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New Castle Airport Temperature Statistics

December Temperature

Wilmington, New Castle County Airport (0 miles)

  • Lowest 9 December, 2025

    17.1 °F

  • Average December

    33.6 °F

  • Highest 1 December, 2025

    45 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (0 miles)

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  • Average Low 2020–2025

    48.1 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    66.5 °F
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