Union Weather Forecast

    • 21
    • 41

    Partly Sunny

    • 6
    • 33

    Partly Sunny

    • 8
    • 17

    Mostly Cloudy

    • 13
    • 19

    Snow

    • 5
    • 24

    Slight Chance Snow

    • 6
    • 21

    Partly Sunny

Today 22 Jan Hunterdon

Mostly sunny. Highs in the lower 40s. Temperature falling into the mid 30s in the afternoon. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 22 Jan Hunterdon

Partly cloudy. Cold with Lows in the lower 20s. West Winds 5 to 10 Mph.

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Union Temperature Statistics

January Temperature

Somerville, Somerset Airport (14.9 miles)

  • Lowest 3 January, 2026

    12 °F

  • Average January

    32.6 °F

  • Highest 8 January, 2026

    52 °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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