Sourland Mountain Weather Forecast

    • 23
    • 31

    Chance Snow

    • 23
    • 41

    Mostly Cloudy

    • 23
    • 40

    Mostly Cloudy

    • 14
    • 32

    Partly Sunny

    • 26
    • 34

    Chance Snow

    • 30
    • 40

    Chance Rain

Today 5 Dec Hunterdon

Mostly sunny in the Morning, then becoming mostly cloudy. Cold with Highs in the lower 30s. Southeast Winds around 5 Mph.

Tonight 5 Dec Hunterdon

Mostly cloudy. Cold with Lows in the lower 20s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sourland Mountain Temperature Statistics

December Temperature

Trenton, Mercer County Airport (8.1 miles)

  • Lowest 1 December, 2025

    28.9 °F

  • Average December

    34.8 °F

  • Highest 1 December, 2025

    42.1 °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

    64.4 °F
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