Princeton Weather Forecast

    • 11
    • 30

    Becoming Sunny

    • 27
    • 34

    Mostly Cloudy

    • 31
    • 45

    Rain Likely

    • 24
    • 39

    Partly Sunny

    • 22
    • 37

    Chance Snow

    • 19
    • 31

    Slight Chance Snow

Today 8 Dec Mercer

Partly sunny this Morning, then becoming cloudy. Colder with Highs in the lower 30s. North Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 8 Dec Mercer

Mostly cloudy in the Evening, then clearing. Colder with Lows around 12. North Winds 5 to 10 Mph.

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Princeton Temperature Statistics

December Temperature

Trenton, Mercer County Airport (9.3 miles)

  • Lowest 5 December, 2025

    19.9 °F

  • Average December

    32 °F

  • Highest 1 December, 2025

    42.1 °F

Climate (2020–Present)

Trenton, Mercer County Airport (9.3 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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