Mercerville-Hamilton Square Weather Forecast

    • 15
    • 29

    Increasing Clouds

    • 20
    • 31

    Partly Sunny

    • 24
    • 41

    Partly Sunny

    • 36
    • 52

    Mostly Cloudy

    • 21
    • 48

    Partly Sunny

    • 31
    • 39

    Mostly Cloudy

Today 15 Dec Mercer

Sunny in the Morning, then mostly cloudy with a slight chance of snow Showers in the afternoon. Cold with Highs in the upper 20s. West Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of snow 20 percent.

Tonight 15 Dec Mercer

Mostly cloudy. Cold with Lows around 16. West Winds around 5 Mph.

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Mercerville-Hamilton Square Temperature Statistics

December Temperature

Trenton, Mercer County Airport (8.1 miles)

  • Lowest 9 December, 2025

    10.9 °F

  • Average December

    31.1 °F

  • Highest 10 December, 2025

    43 °F

Climate (2020–Present)

Trenton, Mercer County Airport (8.1 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    64.3 °F
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