Union Weather Forecast

    • 14
    • 39

    Decreasing Clouds

    • 23
    • 31

    Chance Snow

    • 23
    • 39

    Mostly Cloudy

    • 19
    • 40

    Mostly Cloudy

    • 12
    • 29

    Partly Sunny

    • 24
    • 34

    Chance Snow

Today 4 Dec Hunterdon

Partly sunny. Highs in the upper 30s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 4 Dec Hunterdon

Mostly clear. Colder with Lows around 14. North Winds 5 to 10 Mph. Gusts up to 25 Mph in the evening.

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Union Temperature Statistics

December Temperature

Somerville, Somerset Airport (14.9 miles)

  • Lowest 1 December, 2025

    23 °F

  • Average December

    34.3 °F

  • Highest 1 December, 2025

    43 °F

Climate (2020–Present)

Somerville, Somerset Airport (14.9 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    54.4 °F

  • Average High 2020–2025

    65.8 °F
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