The Flats Weather Forecast

    • 68
    • 87

    Rain Showers

    • 66
    • 78

    Rain Showers

    • 67
    • 85

    Partly Sunny

    • 67
    • 89

    Mostly Sunny

    • 72
    • 92

    Slight Chance Thunderstorms

    • 74
    • 97

    Slight Chance Thunderstorms

Today 26 Jun New Castle

Mostly cloudy this Morning, then becoming partly sunny. Hot with Highs in the upper 80s. West Winds 5 to 10 Mph.

Tonight 26 Jun New Castle

Mostly cloudy with a slight chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Humid with Lows in the upper 60s. West Winds around 5 Mph, becoming northeast after midnight. Chance of rain 70 percent.

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The Flats Temperature Statistics

June Temperature

Wilmington, New Castle County Airport (5.6 miles)

  • Lowest 2 June, 2026

    47.6 °F

  • Average June

    74.1 °F

  • Highest 12 June, 2026

    97.6 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (5.6 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    66.7 °F
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