Union Weather Forecast

    • 40
    • 64

    Slight Chance Rain Showers

    • 43
    • 63

    Chance Rain Showers

    • 39
    • 60

    Chance Rain

    • 39
    • 59

    Partly Sunny

    • 50
    • 67

    Slight Chance Rain Showers

    • 57
    • 77

    Chance Rain Showers

    • 52
    • 72

    Rain Showers Likely

Today 30 Apr Hunterdon

Mostly cloudy this Morning, then partly sunny with a slight chance of Showers this afternoon. Highs in the lower 60s. Northwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 30 Apr Hunterdon

Mostly cloudy with a chance of Showers this Evening, then partly cloudy after midnight. Lows around 40. Northwest Winds 5 to 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Temperature Statistics

April Temperature

Somerville, Somerset Airport (14.9 miles)

  • Lowest 9 April, 2026

    24.1 °F

  • Average April

    54.9 °F

  • Highest 16 April, 2026

    90 °F

Climate (2021–Present)

Somerville, Somerset Airport (14.9 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    65.7 °F
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