Monmouth Junction Weather Forecast

    • 17
    • 40

    Mostly Sunny

    • 24
    • 34

    Chance Wintry Mix

    • 23
    • 43

    Mostly Cloudy

    • 23
    • 41

    Mostly Cloudy

    • 14
    • 34

    Partly Sunny

    • 26
    • 36

    Chance Snow

    • 30
    • 42

    Chance Rain

Today 4 Dec Middlesex

Partly sunny. Highs around 40. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 4 Dec Middlesex

Mostly clear this Evening, then becoming partly cloudy. Cold with Lows around 17. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph, becoming north around 5 Mph after midnight.

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Monmouth Junction Temperature Statistics

December Temperature

Trenton, Mercer County Airport (15.5 miles)

  • Lowest 1 December, 2025

    28.9 °F

  • Average December

    34.8 °F

  • Highest 1 December, 2025

    42.1 °F

Climate (2020–Present)

Trenton, Mercer County Airport (15.5 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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