Union Weather Forecast

    • 63
    • 85

    Becoming Sunny

    • 67
    • 87

    Mostly Sunny

    • 70
    • 89

    Mostly Sunny

    • 69
    • 91

    Chance Rain Showers

    • 69
    • 88

    Rain Showers Likely

    • 69
    • 88

    Chance Thunderstorms

Today 8 Sep Union

Sunny. Highs in the mid 80s. Northeast Winds around 5 Mph.

Tonight 8 Sep Union

Mostly clear. Lows in the lower 60s. East Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Union Temperature Statistics

September Temperature

Spartanburg Memorial (23 miles)

  • Lowest 6 September, 2026

    68 °F

  • Average September

    80.9 °F

  • Highest 2 September, 2026

    96.8 °F

Climate (2021–2026)

Spartanburg Memorial (23 miles)

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  • Average Low 2021–2026

    51.2 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    72 °F
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