Delaware River - Fort Delaware State Park Weather Forecast

    • 9
    • 20

    Increasing Clouds

    • 7
    • 19

    Partly Sunny

    • 7
    • 18

    Mostly Cloudy

    • 15
    • 18

    Chance Snow

    • 18
    • 24

    Chance Snow

    • 19
    • 31

    Mostly Cloudy

Today 28 Jan New Castle

Sunny this Morning, then becoming partly sunny. Cold with Highs around 20. West Winds 5 to 10 Mph. Wind chill Values as low as 6 below this morning.

Tonight 28 Jan New Castle

Partly cloudy in the Evening, then clearing. Cold with Lows around 5 above. West Winds around 5 Mph.

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Delaware River - Fort Delaware State Park Temperature Statistics

January Temperature

Wilmington, New Castle County Airport (5.6 miles)

  • Lowest 21 January, 2026

    9.6 °F

  • Average January

    33.4 °F

  • Highest 7 January, 2026

    61.6 °F

Climate (2021–Present)

Wilmington, New Castle County Airport (5.6 miles)

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  • Average Low 2021–2026

    48 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    66.5 °F
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