Trenton Mercer Airport Weather Forecast

    • 24
    • 41

    Becoming Sunny

    • 25
    • 41

    Mostly Cloudy

    • 15
    • 31

    Partly Sunny

    • 27
    • 35

    Mostly Cloudy

    • 33
    • 45

    Chance Rain

    • 25
    • 41

    Chance Rain/Snow

Today 6 Dec Mercer

Mostly cloudy. A slight chance of drizzle late this morning. Not as cool with Highs in the lower 40s. West Winds around 5 Mph.

Tonight 6 Dec Mercer

Mostly clear. Cold with Lows in the lower 20s. West Winds around 5 Mph.

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Trenton Mercer Airport Temperature Statistics

December Temperature

Trenton, Mercer County Airport (0 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 (0 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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