Delaware Canal - Summit Harbor Weather Forecast

    • 51
    • 81

    Rain Showers Likely

    • 44
    • 64

    Rain Showers Likely

    • 48
    • 66

    Mostly Sunny

    • 52
    • 69

    Rain Showers

    • 50
    • 69

    Chance Rain Showers

    • 52
    • 71

    Partly Sunny

Today 10 May New Castle

Mostly sunny. Areas of fog in the morning. A chance of Showers and Thunderstorms in the afternoon. Warmer with Highs in the lower 80s. West Winds around 5 Mph, increasing to around 10 Mph in the afternoon. Chance of rain 50 percent.

Tonight 10 May New Castle

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then Showers likely after midnight. Lows in the lower 50s. North Winds 5 to 10 Mph. Chance of rain 60 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Delaware Canal - Summit Harbor Temperature Statistics

May Temperature

Wilmington, New Castle County Airport (10.6 miles)

  • Lowest 1 May, 2026

    42.7 °F

  • Average May

    60.4 °F

  • Highest 5 May, 2026

    84.7 °F

Climate (2021–Present)

Wilmington, New Castle County Airport (10.6 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    66.6 °F
Get WillyWeather+ to remove ads