Delaware Canal - Summit Harbor Weather Forecast

    • 65
    • 89

    Slight Chance Rain Showers

    • 58
    • 80

    Chance Rain Showers

    • 57
    • 75

    Chance Rain Showers

    • 39
    • 62

    Rain Showers

    • 33
    • 53

    Mostly Sunny

    • 49
    • 60

    Partly Sunny

    • 48
    • 72

    Partly Sunny

Today 16 Apr New Castle

Mostly sunny. Hot with Highs in the upper 80s. Southwest Winds 5 to 10 Mph.

Tonight 16 Apr New Castle

Mostly clear late this Evening, then mostly cloudy with a slight chance of Showers. Lows in the mid 60s. Southwest Winds around 10 Mph, becoming west. Chance of rain 20 percent.

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  • Temperature Real-Time

Delaware Canal - Summit Harbor Temperature Statistics

April Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 8 April, 2026

    30.7 °F

  • Average April

    56.2 °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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