Brookside Weather Forecast

    • 57
    • 93

    Rain Showers Likely

    • 51
    • 65

    Rain Showers Likely

    • 50
    • 64

    Rain Showers

    • 54
    • 63

    Rain Showers Likely

    • 57
    • 71

    Rain Showers Likely

    • 59
    • 77

    Chance Rain Showers

Today 20 May New Castle

Mostly sunny. Showers likely with a chance of Thunderstorms in the afternoon. Hot with Highs in the lower 90s. West Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 20 May New Castle

Cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a chance of Showers after midnight. Much cooler with Lows in the upper 50s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming north after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Brookside Temperature Statistics

May Temperature

Wilmington, New Castle County Airport (6.2 miles)

  • Lowest 12 May, 2026

    39.7 °F

  • Average May

    62.1 °F

  • Highest 17 May, 2026

    87.1 °F

Climate (2021–Present)

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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