Delaware River - Port Penn Weather Forecast

    • 21
    • 35

    Decreasing Clouds

    • 29
    • 36

    Partly Sunny

    • 26
    • 44

    Chance Rain/Snow

    • 18
    • 31

    Slight Chance Snow

    • 15
    • 32

    Mostly Sunny

    • 14
    • 26

    Mostly Sunny

Today 15 Jan New Castle

Partly sunny. Much cooler with Highs in the lower 30s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 15 Jan New Castle

Cloudy with a chance of rain or snow. Near steady temperature around 40. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 50 percent.

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Delaware River - Port Penn Temperature Statistics

January Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 3 January, 2026

    21.9 °F

  • Average January

    36.7 °F

  • Highest 7 January, 2026

    60.1 °F

Climate (2021–Present)

Wilmington, New Castle County Airport (10.6 miles)

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  • Average Low 2021–2026

    48.1 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    66.5 °F
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