Delaware Canal - Summit Harbor Weather Forecast

    • 41
    • 63

    Increasing Clouds

    • 43
    • 65

    Mostly Sunny

    • 39
    • 60

    Mostly Sunny

    • 42
    • 61

    Sunny

    • 45
    • 65

    Mostly Sunny

    • 49
    • 68

    Partly Sunny

Today 21 Oct New Castle

Sunny. Highs in the lower 60s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 21 Oct New Castle

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

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Delaware Canal - Summit Harbor Temperature Statistics

October Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 18 October, 2026

    37.9 °F

  • Average October

    63.3 °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

    57.4 °F

  • Average High 2021–2026

    66.7 °F
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