Union Weather Forecast

    • 42
    • 62

    Becoming Sunny

    • 47
    • 68

    Rain Showers Likely

    • 42
    • 61

    Partly Sunny

    • 38
    • 58

    Mostly Sunny

    • 37
    • 59

    Partly Sunny

    • 41
    • 60

    Slight Chance Rain Showers

Today 20 Oct Hunterdon

Partly sunny. A slight chance of Showers this Morning, then a chance of Showers this afternoon. Cooler with Highs in the lower 60s. West Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 40 percent.

Tonight 20 Oct Hunterdon

Clear, cooler with Lows in the lower 40s. West Winds 10 to 15 Mph.

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Union Temperature Statistics

October Temperature

Somerville, Somerset Airport (14.9 miles)

  • Lowest 10 October, 2025

    32 °F

  • Average October

    57.9 °F

  • Highest 5 October, 2025

    87.1 °F

Climate (2020–Present)

Somerville, Somerset Airport (14.9 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    65.9 °F
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