Union Weather Forecast

    • 44
    • 65

    Mostly Sunny

    • 41
    • 67

    Mostly Sunny

    • 39
    • 63

    Partly Sunny

    • 43
    • 67

    Mostly Sunny

    • 38
    • 60

    Partly Sunny

    • 37
    • 59

    Partly Sunny

Today 19 Oct Hunterdon

Areas of frost in the morning. Sunny. Highs in the mid 60s. Northeast Winds around 5 Mph.

Tonight 19 Oct Hunterdon

Partly cloudy. Not as cool with Lows in the mid 40s. North Winds 5 to 10 Mph.

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Union Temperature Statistics

October Temperature

Somerville, Somerset Airport (14.9 miles)

  • Lowest 7 October, 2026

    35.1 °F

  • Average October

    59.1 °F

  • Highest 2 October, 2026

    86 °F

Climate (2021–2026)

Somerville, Somerset Airport (14.9 miles)

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  • Average Low 2021–2026

    42.9 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    65.6 °F
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