Princeton Weather Forecast

    • 36
    • 49

    Rain

    • 39
    • 57

    Rain

    • 33
    • 56

    Chance Snow Showers

    • 30
    • 50

    Partly Sunny

    • 36
    • 52

    Partly Sunny

    • 40
    • 58

    Slight Chance Rain Showers

Today 23 Mar Mercer

Mostly sunny. Cooler with Highs in the upper 40s. West Winds 5 to 10 Mph.

Tonight 23 Mar Mercer

Mostly cloudy. Rain after midnight. Lows in the upper 30s. South Winds 5 to 10 Mph. Chance of rain 80 percent.

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Princeton Temperature Statistics

March Temperature

Trenton, Mercer County Airport (9.3 miles)

  • Lowest 2 March, 2025

    17.9 °F

  • Average March

    45.4 °F

  • Highest 16 March, 2025

    70.6 °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

    55.2 °F

  • Average High 2020–2025

    64.2 °F
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