Trenton Weather Forecast

    • 53
    • 76

    Becoming Sunny

    • 55
    • 76

    Mostly Sunny

    • 61
    • 81

    Mostly Sunny

    • 64
    • 85

    Partly Sunny

    • 61
    • 82

    Partly Sunny

    • 61
    • 78

    Chance Rain Showers

Today 14 Sep Mercer

Sunny. Less humid with Highs in the mid 70s. North Winds 10 to 15 Mph.

Tonight 14 Sep Mercer

Clear, cooler with Lows in the lower 50s. North Winds 5 to 10 Mph.

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Trenton Temperature Statistics

September Temperature

Trenton, Mercer County Airport (5.6 miles)

  • Lowest 8 September, 2026

    56.6 °F

  • Average September

    74.4 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Trenton, Mercer County Airport (5.6 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    64.5 °F
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