South Trenton Weather Forecast

    • 24
    • 36

    Mostly Sunny

    • 20
    • 36

    Partly Sunny

    • 27
    • 42

    Snow Likely

    • 17
    • 31

    Slight Chance Snow

    • 20
    • 30

    Mostly Cloudy

    • 22
    • 35

    Partly Sunny

    • 31
    • 43

    Mostly Cloudy

Today 11 Dec Mercer

Partly sunny. Cooler with Highs in the mid 30s. West Winds 15 to 20 Mph with Gusts up to 35 Mph.

Tonight 11 Dec Mercer

Mostly clear. Cold with Lows in the lower 20s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Trenton Temperature Statistics

December Temperature

Trenton, Mercer County Airport (5.6 miles)

  • Lowest 9 December, 2025

    10.9 °F

  • Average December

    30.7 °F

  • Highest 1 December, 2025

    42.1 °F

Climate (2020–Present)

Trenton, Mercer County Airport (5.6 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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