Pennington / Prospect Weather Forecast

    • 59
    • 82

    Increasing Clouds

    • 60
    • 77

    Mostly Cloudy

    • 61
    • 73

    Rain Showers Likely

    • 61
    • 80

    Slight Chance Rain Showers

    • 59
    • 86

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

Today 15 Sep Mercer

Patchy fog in the morning. Mostly sunny. Highs in the lower 80s. Northeast Winds around 5 Mph.

Tonight 15 Sep Mercer

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the upper 50s. East Winds around 5 Mph.

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Pennington / Prospect Temperature Statistics

September Temperature

Trenton, Mercer County Airport (3.1 miles)

  • Lowest 8 September, 2025

    51.1 °F

  • Average September

    67.2 °F

  • Highest 5 September, 2025

    86 °F

Climate (2020–Present)

Trenton, Mercer County Airport (3.1 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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