Delaware River - Port Penn Weather Forecast

    • 57
    • 74

    Becoming Sunny

    • 65
    • 78

    Mostly Sunny

    • 60
    • 82

    Partly Sunny

    • 56
    • 69

    Rain Showers Likely

    • 49
    • 71

    Rain Showers Likely

    • 39
    • 56

    Partly Sunny

Today 12 Oct New Castle

Mostly sunny. A chance of Showers and Thunderstorms this morning. Patchy fog this morning. Highs in the mid 70s. North Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 12 Oct New Castle

Partly cloudy in the Evening, then clearing. Lows in the upper 50s. Northwest Winds around 5 Mph.

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Delaware River - Port Penn Temperature Statistics

October Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 7 October, 2026

    42.7 °F

  • Average October

    63.7 °F

  • Highest 2 October, 2026

    86.6 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (10.6 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    66.7 °F
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