Sourland Mountain Weather Forecast

    • 40
    • 63

    Mostly Sunny

    • 40
    • 66

    Sunny

    • 34
    • 59

    Mostly Sunny

    • 36
    • 60

    Sunny

    • 39
    • 63

    Mostly Sunny

    • 45
    • 67

    Mostly Sunny

    • 42
    • 64

    Partly Sunny

Today 21 Oct Hunterdon

Sunny. Near steady temperature in the lower 60s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 21 Oct Hunterdon

Mostly clear. Lows in the upper 30s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sourland Mountain Temperature Statistics

October Temperature

Trenton, Mercer County Airport (8.1 miles)

  • Lowest 18 October, 2026

    36 °F

  • Average October

    60.5 °F

  • Highest 2 October, 2026

    87.7 °F

Climate (2021–2026)

Trenton, Mercer County Airport (8.1 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.3 °F

  • Average High 2021–2026

    64.5 °F
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