Brookside Weather Forecast

    • 63
    • 78

    Mostly Cloudy

    • 61
    • 78

    Rain Showers Likely

    • 55
    • 71

    Chance Rain Showers

    • 53
    • 65

    Chance Rain Showers

    • 53
    • 64

    Chance Rain Showers

    • 52
    • 64

    Chance Rain Showers

Today 19 Sep New Castle

Mostly sunny. Highs in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 19 Sep New Castle

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 60s. East Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Brookside Temperature Statistics

September Temperature

Wilmington, New Castle County Airport (6.2 miles)

  • Lowest 15 September, 2026

    52.6 °F

  • Average September

    75 °F

  • Highest 1 September, 2026

    93.7 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (6.2 miles)

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

  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    66.8 °F
Get WillyWeather+ to remove ads