Union Weather Forecast

    • 58
    • 83

    Increasing Clouds

    • 61
    • 81

    Mostly Sunny

    • 62
    • 86

    Mostly Sunny

    • 61
    • 88

    Mostly Sunny

    • 62
    • 87

    Partly Sunny

    • 62
    • 81

    Partly Sunny

    • 64
    • 81

    Partly Sunny

Today 16 Sep Union

Sunny. Near steady Temperatures in the lower 80s. North Winds around 5 Mph.

Tonight 16 Sep Union

Partly cloudy. Lows in the upper 50s. North Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Real-Time

Union Temperature Statistics

September Temperature

Spartanburg Memorial (23 miles)

  • Lowest 9 September, 2025

    53.6 °F

  • Average September

    69.1 °F

  • Highest 5 September, 2025

    87.8 °F

Climate (2020–Present)

Spartanburg Memorial (23 miles)

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  • Average Low 2020–2025

    51.1 °F

  • Average 2020–2025

    60.8 °F

  • Average High 2020–2025

    71.6 °F
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