Plainsboro Township Weather Forecast

    • 57
    • 76

    Rain Showers Likely

    • 52
    • 69

    Chance Rain Showers

    • 51
    • 66

    Chance Rain Showers

    • 51
    • 65

    Chance Rain Showers

    • 50
    • 63

    Chance Rain Showers

    • 50
    • 66

    Chance Rain Showers

Today 20 Sep Middlesex

Showers. Highs in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of rain 80 percent.

Tonight 20 Sep Middlesex

Mostly cloudy. Showers Likely, mainly in the evening. Humid with Lows in the upper 50s. South Winds around 5 Mph, becoming north with Gusts up to 20 Mph after midnight. Chance of rain 70 percent.

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  • Temperature Real-Time

Plainsboro Township Temperature Statistics

September Temperature

Trenton, Mercer County Airport (12.4 miles)

  • Lowest 15 September, 2026

    51.7 °F

  • Average September

    72.6 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Trenton, Mercer County Airport (12.4 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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