Delaware Canal - Summit Harbor Weather Forecast

    • 42
    • 56

    Rain Likely

    • 39
    • 48

    Rain

    • 28
    • 45

    Partly Sunny

    • 29
    • 42

    Mostly Sunny

    • 34
    • 47

    Partly Sunny

    • 29
    • 47

    Chance Rain

    • 21
    • 39

    Chance Rain

Today 9 Jan New Castle

Mostly cloudy with a 50 percent chance of rain. Highs in the mid 50s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 9 Jan New Castle

Cloudy. Rain likely in the evening. Not as cool with Lows in the lower 40s. Southwest Winds 5 to 10 Mph, becoming northwest after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Delaware Canal - Summit Harbor Temperature Statistics

January Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 3 January, 2026

    21.9 °F

  • Average January

    33.3 °F

  • Highest 7 January, 2026

    60.1 °F

Climate (2021–Present)

Wilmington, New Castle County Airport (10.6 miles)

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  • Average Low 2021–2026

    48 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    66.5 °F
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