Plainsboro Township Weather Forecast

    • 58
    • 82

    Increasing Clouds

    • 58
    • 84

    Mostly Sunny

    • 57
    • 82

    Partly Sunny

    • 58
    • 81

    Mostly Cloudy

    • 58
    • 79

    Chance Rain Showers

    • 59
    • 80

    Slight Chance Rain Showers

    • 60
    • 85

    Mostly Sunny

Today 13 Sep Middlesex

Patchy fog this morning. Mostly sunny. Highs in the lower 80s. Southwest Winds around 5 Mph.

Tonight 13 Sep Middlesex

Partly cloudy. Patchy fog after midnight. Lows in the upper 50s. South Winds around 5 Mph.

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Plainsboro Township Temperature Statistics

September Temperature

Trenton, Mercer County Airport (12.4 miles)

  • Lowest 8 September, 2025

    51.1 °F

  • Average September

    67.2 °F

  • Highest 5 September, 2025

    86 °F

Climate (2020–Present)

Trenton, Mercer County Airport (12.4 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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