Delaware Canal - Summit Harbor Weather Forecast

    • 52
    • 76

    Increasing Clouds

    • 44
    • 64

    Rain Showers

    • 49
    • 68

    Partly Sunny

    • 44
    • 62

    Mostly Sunny

    • 41
    • 61

    Mostly Sunny

    • 42
    • 60

    Partly Sunny

Today 19 Oct New Castle

Mostly sunny. Highs in the mid 70s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph, increasing to south 15 to 20 Mph with Gusts up to 30 Mph this afternoon.

Tonight 19 Oct New Castle

Showers. Lows in the lower 50s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

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Delaware Canal - Summit Harbor Temperature Statistics

October Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 10 October, 2025

    41 °F

  • Average October

    61.1 °F

  • Highest 7 October, 2025

    80.6 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (10.6 miles)

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  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    66.6 °F
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