Penns Grove Weather Forecast

    • 19
    • 30

    Increasing Clouds

    • 25
    • 32

    Partly Sunny

    • 28
    • 43

    Partly Sunny

    • 38
    • 53

    Rain

    • 24
    • 49

    Partly Sunny

    • 33
    • 41

    Mostly Cloudy

Today 15 Dec Salem

Sunny in the Morning, then becoming partly sunny. Cold with Highs around 30. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 15 Dec Salem

Mostly cloudy in the Evening, then becoming partly cloudy. Cold with Lows around 18. Southwest Winds 5 to 10 Mph.

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Penns Grove Temperature Statistics

December Temperature

Wilmington, New Castle County Airport (8.1 miles)

  • Lowest 9 December, 2025

    17.1 °F

  • Average December

    33.6 °F

  • Highest 1 December, 2025

    45 °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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