Princeton Junction Weather Forecast

    • 65
    • 75

    Chance Rain Showers

    • 70
    • 86

    Rain Showers

    • 65
    • 92

    Chance Thunderstorms

    • 65
    • 85

    Mostly Sunny

    • 70
    • 89

    Slight Chance Thunderstorms

    • 73
    • 93

    Partly Sunny

Today 17 Jun Mercer

Cloudy. Areas of drizzle with a slight chance of Showers this Morning, then a chance of Showers with a slight chance of Thunderstorms this afternoon. Areas of fog this Morning, then patchy fog this afternoon. Highs in the mid 70s. East Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 17 Jun Mercer

Cloudy with a chance of Showers with a slight chance of Thunderstorms. Patchy fog. Humid with Lows in the mid 60s. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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Princeton Junction Temperature Statistics

June Temperature

Trenton, Mercer County Airport (10.6 miles)

  • Lowest 2 June, 2025

    45.6 °F

  • Average June

    68.8 °F

  • Highest 12 June, 2025

    88 °F

Climate (2020–Present)

Trenton, Mercer County Airport (10.6 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    64.4 °F
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