Middletown Weather Forecast

    • 66
    • 82

    Mostly Cloudy

    • 63
    • 82

    Mostly Sunny

    • 62
    • 82

    Mostly Sunny

    • 65
    • 84

    Partly Sunny

    • 68
    • 86

    Partly Sunny

    • 70
    • 88

    Slight Chance Thunderstorms

Today 6 Aug New Castle

Mostly cloudy. Humid with Highs in the lower 80s. East Winds 5 to 10 Mph.

Tonight 6 Aug New Castle

Mostly cloudy in the Evening, then becoming partly cloudy. Humid with Lows in the mid 60s. East Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Middletown Temperature Statistics

August Temperature

Wilmington, New Castle County Airport (16.2 miles)

  • Lowest 3 August, 2025

    60.1 °F

  • Average August

    71.8 °F

  • Highest 2 August, 2025

    82.7 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (16.2 miles)

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

  • Average Low 2020–2025

    48.2 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    66.5 °F
Get WillyWeather+ to remove ads