Delaware River - Port Penn Weather Forecast

    • 43
    • 65

    Sunny

    • 51
    • 61

    Partly Sunny

    • 60
    • 79

    Mostly Cloudy

    • 61
    • 83

    Mostly Cloudy

    • 65
    • 87

    Mostly Cloudy

    • 64
    • 86

    Slight Chance Rain Showers

Today 11 Apr New Castle

Sunny. Highs in the mid 60s. North Winds 10 to 15 Mph.

Tonight 11 Apr New Castle

Clear. Lows in the lower 40s. North Winds 5 to 10 Mph.

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  • Temperature Real-Time

Delaware River - Port Penn Temperature Statistics

April Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 8 April, 2026

    30.7 °F

  • Average April

    55.1 °F

  • Highest 1 April, 2026

    85.6 °F

Climate (2021–Present)

Wilmington, New Castle County Airport (10.6 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    66.5 °F
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