Delaware Canal - Summit Harbor Weather Forecast

    • 35
    • 50

    Mostly Sunny

    • 46
    • 62

    Rain Showers Likely

    • 44
    • 65

    Partly Sunny

    • 47
    • 69

    Chance Rain

    • 30
    • 60

    Partly Sunny

    • 34
    • 48

    Partly Sunny

    • 36
    • 52

    Partly Sunny

Today 19 Mar New Castle

Mostly cloudy. Not as cool with Highs in the upper 40s. South Winds 5 to 10 Mph.

Tonight 19 Mar New Castle

Partly cloudy this Evening, then becoming mostly clear. Lows in the mid 30s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Delaware Canal - Summit Harbor Temperature Statistics

March Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 2 March, 2026

    25.6 °F

  • Average March

    47.5 °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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