Pennington / Prospect Weather Forecast

    • 24
    • 44

    Partly Sunny

    • 14
    • 32

    Partly Sunny

    • 29
    • 36

    Mostly Cloudy

    • 34
    • 47

    Chance Rain

    • 27
    • 43

    Chance Rain/Snow

    • 21
    • 38

    Chance Snow

    • 20
    • 34

    Slight Chance Snow

Today 7 Dec Mercer

Partly sunny. Highs in the lower 40s. Northwest Winds around 5 Mph, becoming southwest around 5 Mph this afternoon.

Tonight 7 Dec Mercer

Partly cloudy. Cold with Lows in the lower 20s. West Winds around 5 Mph, becoming northwest with Gusts up to 20 Mph after midnight.

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Pennington / Prospect Temperature Statistics

December Temperature

Trenton, Mercer County Airport (3.1 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 (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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