Brookside Weather Forecast

    • 67
    • 85

    Rain Showers

    • 60
    • 80

    Chance Rain Showers

    • 63
    • 84

    Mostly Sunny

    • 66
    • 88

    Chance Thunderstorms

    • 66
    • 87

    Chance Thunderstorms

    • 66
    • 84

    Slight Chance Thunderstorms

Today 22 Jun New Castle

Cloudy. A slight chance of Showers this Morning, then Showers with a chance of Thunderstorms this afternoon. Some Thunderstorms may be severe with damaging Winds. Locally heavy rainfall possible this afternoon. Hot with Highs in the mid 80s. East Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southeast 10 to 15 Mph with Gusts up to 30 Mph this afternoon. Chance of rain 90 percent.

Tonight 22 Jun New Castle

Showers with a chance of Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Some Thunderstorms may be severe with damaging Winds in the evening. Locally heavy rainfall possible. Humid with Lows in the upper 60s. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming south after midnight. Chance of rain 90 percent.

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Brookside Temperature Statistics

June Temperature

Wilmington, New Castle County Airport (6.2 miles)

  • Lowest 2 June, 2026

    47.6 °F

  • Average June

    74.4 °F

  • Highest 12 June, 2026

    97.6 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (6.2 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    66.6 °F
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