Union Weather Forecast

    • 18
    • 34

    Increasing Clouds

    • 25
    • 35

    Mostly Cloudy

    • 32
    • 42

    Chance Rain

    • 30
    • 49

    Partly Sunny

    • 36
    • 48

    Rain Likely

    • 42
    • 53

    Rain Likely

    • 31
    • 53

    Chance Rain

Today 4 Jan Hunterdon

Mostly sunny. Highs in the mid 30s. Northwest Winds 5 to 10 Mph.

Tonight 4 Jan Hunterdon

Mostly clear this Evening, then becoming partly cloudy. Cold with Lows around 18. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Temperature Statistics

January Temperature

Somerville, Somerset Airport (14.9 miles)

  • Lowest 1 January, 2026

    12.9 °F

  • Average January

    24.5 °F

  • Highest 1 January, 2026

    34 °F

Climate (2021–Present)

Somerville, Somerset Airport (14.9 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    65.7 °F
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