New Castle Airport Weather Forecast

    • 30
    • 42

    Chance Snow

    • 16
    • 34

    Rain/Snow Likely

    • 5
    • 23

    Partly Sunny

    • 7
    • 19

    Slight Chance Snow

    • 6
    • 18

    Partly Sunny

    • 17
    • 29

    Mostly Cloudy

Today 18 Jan New Castle

A slight chance of freezing rain in the morning. Mostly cloudy with a chance of rain. Highs in the lower 40s. South Winds 5 to 10 Mph. Chance of precipitation 40 percent.

Tonight 18 Jan New Castle

Mostly cloudy. Cold with Lows around 30. Southwest Winds around 5 Mph, becoming northwest around 5 Mph after midnight.

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New Castle Airport Temperature Statistics

January Temperature

Wilmington, New Castle County Airport (0 miles)

  • Lowest 7 January, 2025

    20.8 °F

  • Average January

    31.1 °F

  • Highest 1 January, 2025

    51.7 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (0 miles)

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  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57.2 °F

  • Average High 2020–2025

    66.3 °F
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