Penns Grove Weather Forecast

    • 62
    • 81

    Becoming Sunny

    • 62
    • 84

    Partly Sunny

    • 61
    • 82

    Partly Sunny

    • 60
    • 80

    Partly Sunny

    • 61
    • 79

    Mostly Cloudy

    • 62
    • 80

    Partly Sunny

Today 13 Sep Salem

Patchy fog in the morning. Mostly sunny. Highs in the lower 80s. East Winds around 5 Mph, becoming southwest in the afternoon.

Tonight 13 Sep Salem

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog. Lows around 60. South Winds around 5 Mph.

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Penns Grove Temperature Statistics

September Temperature

Wilmington, New Castle County Airport (8.1 miles)

  • Lowest 9 September, 2025

    53.1 °F

  • Average September

    69.6 °F

  • Highest 6 September, 2025

    91 °F

Climate (2020–Present)

Wilmington, New Castle County Airport (8.1 miles)

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  • Average Low 2020–2025

    48.1 °F

  • Average 2020–2025

    57.3 °F

  • Average High 2020–2025

    66.5 °F
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