Union Weather Forecast

    • 55
    • 82

    Sunny

    • 58
    • 84

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

    • 67
    • 87

    Chance Rain Showers

    • 65
    • 82

    Rain Showers Likely

    • 61
    • 75

    Rain Showers Likely

Today 29 Sep Union

Sunny. Highs in the lower 80s. Light and variable Winds.

Tonight 29 Sep Union

Clear. Lows in the mid 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Temperature Statistics

September Temperature

Spartanburg Memorial (23 miles)

  • Lowest 26 September, 2026

    46.4 °F

  • Average September

    74.8 °F

  • Highest 2 September, 2026

    96.8 °F

Climate (2021–2026)

Spartanburg Memorial (23 miles)

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  • Average Low 2021–2026

    51.3 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    72 °F
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