Sourland Mountain Weather Forecast

    • 62
    • 76

    Mostly Cloudy

    • 62
    • 76

    Rain Showers Likely

    • 57
    • 73

    Mostly Cloudy

    • 57
    • 80

    Mostly Sunny

    • 61
    • 82

    Slight Chance Rain Showers

    • 64
    • 80

    Chance Rain Showers

    • 57
    • 80

    Chance Rain Showers

Today 19 Aug Hunterdon

Partly sunny. Highs in the mid 70s. East Winds 5 to 10 Mph.

Tonight 19 Aug Hunterdon

Partly cloudy this Evening, then becoming cloudy. Lows in the lower 60s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sourland Mountain Temperature Statistics

August Temperature

Trenton, Mercer County Airport (8.1 miles)

  • Lowest 3 August, 2025

    56.6 °F

  • Average August

    74.2 °F

  • Highest 13 August, 2025

    93.7 °F

Climate (2020–Present)

Trenton, Mercer County Airport (8.1 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    64.4 °F
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