Union Weather Forecast

    • 73
    • 95

    Mostly Sunny

    • 74
    • 95

    Partly Sunny

    • 75
    • 96

    Partly Sunny

    • 75
    • 97

    Slight Chance Thunderstorms

    • 72
    • 93

    Chance Rain Showers

    • 74
    • 93

    Partly Sunny

Today 11 Aug Union

Sunny, hot with Highs in the mid 90s. Light and variable Winds, becoming west around 5 Mph this afternoon. Heat index Values up to 102.

Tonight 11 Aug Union

Partly cloudy. Lows in the lower 70s. West Winds around 5 Mph in the Evening, becoming light and variable.

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Union Temperature Statistics

August Temperature

Spartanburg Memorial (23 miles)

  • Lowest 1 August, 2026

    68 °F

  • Average August

    76.5 °F

  • Highest 8 August, 2026

    91.4 °F

Climate (2021–2026)

Spartanburg Memorial (23 miles)

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  • Average Low 2021–2026

    51.2 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    71.9 °F
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