Union City Weather Forecast

    • 55
    • 78

    Rain Showers

    • 51
    • 73

    Mostly Sunny

    • 54
    • 76

    Mostly Sunny

    • 56
    • 78

    Mostly Cloudy

    • 64
    • 77

    Mostly Cloudy

    • 56
    • 80

    Slight Chance Rain Showers

Today 5 Sep Northern New Haven

Partly sunny. Scattered Showers this afternoon. Highs in the upper 70s. North Winds around 5 Mph. Chance of rain 40 percent.

Tonight 5 Sep Northern New Haven

Mostly cloudy in the Evening, then becoming partly cloudy. Scattered Showers. Lows in the mid 50s. Northeast Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union City Temperature Statistics

September Temperature

Oxford, Waterbury-Oxford Airport (4.3 miles)

  • Lowest 1 September, 2026

    60.1 °F

  • Average September

    65.4 °F

  • Highest 1 September, 2026

    73.9 °F

Climate (2021–2026)

Oxford, Waterbury-Oxford Airport (4.3 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.4 °F
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