Union Weather Forecast

    • 41
    • 68

    Mostly Sunny

    • 47
    • 66

    Mostly Cloudy

    • 47
    • 65

    Rain Showers

    • 39
    • 58

    Slight Chance Rain Showers

    • 39
    • 60

    Partly Sunny

    • 37
    • 57

    Partly Sunny

    • 39
    • 59

    Partly Sunny

Today 27 Apr Hunterdon

Sunny. Highs in the upper 60s. Northeast Winds around 5 Mph.

Tonight 27 Apr Hunterdon

Mostly clear. Lows around 40. Southeast Winds around 5 Mph this Evening, becoming light and variable.

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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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