South Trenton Weather Forecast

    • 24
    • 44

    Increasing Clouds

    • 7
    • 38

    Partly Sunny

    • 12
    • 20

    Mostly Cloudy

    • 19
    • 23

    Snow

    • 6
    • 26

    Chance Snow

    • 9
    • 23

    Partly Sunny

Today 22 Jan Mercer

Mostly sunny. Highs in the lower 40s. Temperature falling into the upper 30s this afternoon. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 22 Jan Mercer

Mostly cloudy in the Evening, then becoming partly cloudy. Cold with Lows in the lower 20s. West Winds around 5 Mph.

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South Trenton Temperature Statistics

January Temperature

Trenton, Mercer County Airport (5.6 miles)

  • Lowest 19 January, 2026

    15.1 °F

  • Average January

    33.6 °F

  • Highest 9 January, 2026

    53.1 °F

Climate (2021–Present)

Trenton, Mercer County Airport (5.6 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    64.3 °F
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