Delaware River - Port Penn Weather Forecast

    • 50
    • 69

    Becoming Sunny

    • 45
    • 67

    Sunny

    • 49
    • 66

    Partly Sunny

    • 52
    • 71

    Mostly Sunny

    • 54
    • 75

    Mostly Sunny

    • 56
    • 72

    Mostly Cloudy

Today 26 Oct New Castle

Areas of frost in the morning. Sunny. Highs in the upper 60s. West Winds 5 to 10 Mph.

Tonight 26 Oct New Castle

Clear. Not as cool with Lows around 50. 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 19 October, 2026

    35.7 °F

  • Average October

    61.4 °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

    57.3 °F

  • Average High 2021–2026

    66.7 °F
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