Delaware River - Port Penn Weather Forecast

    • 30
    • 52

    Rain/Snow

    • 41
    • 50

    Partly Sunny

    • 38
    • 53

    Mostly Cloudy

    • 50
    • 55

    Rain

    • 31
    • 67

    Rain

    • 25
    • 39

    Partly Sunny

Today 12 Mar New Castle

Rain this Morning, then rain with snow likely this afternoon. Little or no snow accumulation. Much cooler with Highs in the lower 50s. Temperature falling into the upper 30s this afternoon. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of precipitation near 100 percent.

Tonight 12 Mar New Castle

Partly cloudy with a chance of rain and snow in the Evening, then mostly clear after midnight. Little or no snow accumulation. Colder with Lows in the upper 20s. West Winds 5 to 10 Mph. Chance of precipitation 50 percent.

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Delaware River - Port Penn Temperature Statistics

March Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 2 March, 2026

    25.6 °F

  • Average March

    45.8 °F

  • Highest 10 March, 2026

    82.9 °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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