Delaware River - Trenton Weather Forecast

    • 24
    • 42

    Mostly Cloudy

    • 13
    • 32

    Partly Sunny

    • 29
    • 36

    Mostly Cloudy

    • 34
    • 47

    Chance Rain

    • 29
    • 44

    Chance Rain/Snow

    • 22
    • 41

    Chance Rain/Snow

Today 7 Dec Mercer

Partly sunny in the Morning, then becoming mostly cloudy. Highs in the lower 40s. Northwest Winds around 5 Mph, becoming southwest in the afternoon.

Tonight 7 Dec Mercer

Mostly cloudy in the Evening, then becoming partly cloudy. Cold with Lows in the mid 20s. Southwest Winds around 5 Mph, becoming northwest after midnight.

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Delaware River - Trenton Temperature Statistics

December Temperature

Trenton, Mercer County Airport (6.8 miles)

  • Lowest 4 December, 2025

    23 °F

  • Average December

    33.7 °F

  • Highest 1 December, 2025

    42.1 °F

Climate (2020–Present)

Trenton, Mercer County Airport (6.8 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    64.4 °F
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