Middle Run Valley Natural Area Weather Forecast

    • 61
    • 78

    Rain Likely

    • 55
    • 71

    Rain Showers Likely

    • 52
    • 64

    Rain Showers Likely

    • 52
    • 64

    Chance Rain Showers

    • 51
    • 64

    Chance Rain Showers

    • 51
    • 65

    Slight Chance Rain Showers

Today 20 Sep New Castle

Mostly cloudy. Rain likely this Morning, then a chance of rain and Thunderstorms this afternoon. Highs in the upper 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

Tonight 20 Sep New Castle

Mostly cloudy. Rain likely with a chance of Thunderstorms in the evening. Humid with Lows in the lower 60s. Southwest Winds around 5 Mph, becoming north after midnight. Chance of rain 70 percent.

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Middle Run Valley Natural Area Temperature Statistics

September Temperature

Wilmington, New Castle County Airport (6.8 miles)

  • Lowest 15 September, 2026

    52.6 °F

  • Average September

    75.2 °F

  • Highest 1 September, 2026

    93.7 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (6.8 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    66.8 °F
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