South Trenton Weather Forecast

    • 59
    • 84

    Becoming Sunny

    • 59
    • 87

    Mostly Sunny

    • 56
    • 75

    Partly Sunny

    • 56
    • 75

    Partly Sunny

    • 60
    • 80

    Partly Sunny

    • 63
    • 85

    Slight Chance Rain Showers

Today 18 Sep Mercer

Mostly cloudy this Morning, then clearing. Areas of fog this morning. Warmer with Highs in the lower 80s. Northwest Winds around 5 Mph.

Tonight 18 Sep Mercer

Clear. Lows in the upper 50s. West Winds around 5 Mph.

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South Trenton Temperature Statistics

September Temperature

Trenton, Mercer County Airport (5.6 miles)

  • Lowest 8 September, 2025

    51.1 °F

  • Average September

    67.8 °F

  • Highest 5 September, 2025

    86 °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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