Lawrenceville Weather Forecast

    • 60
    • 82

    Partly Sunny

    • 56
    • 76

    Partly Sunny

    • 55
    • 78

    Mostly Sunny

    • 60
    • 81

    Partly Sunny

    • 70
    • 84

    Partly Sunny

    • 60
    • 85

    Partly Sunny

    • 55
    • 76

    Mostly Sunny

Today 5 Sep Mercer

Mostly sunny. Highs in the lower 80s. North Winds around 5 Mph.

Tonight 5 Sep Mercer

Mostly clear. Lows around 60. North Winds around 5 Mph.

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Lawrenceville Temperature Statistics

September Temperature

Trenton, Mercer County Airport (4.3 miles)

  • Lowest 2 September, 2026

    67.6 °F

  • Average September

    75.7 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Trenton, Mercer County Airport (4.3 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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