Union Weather Forecast

    • 75
    • 93

    Increasing Clouds

    • 70
    • 89

    Rain Showers

    • 66
    • 80

    Rain Showers

    • 67
    • 80

    Chance Thunderstorms

    • 68
    • 80

    Rain Showers Likely

    • 70
    • 87

    Slight Chance Thunderstorms

Today 21 Jul Union

Mostly sunny. Highs in the mid 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 100.

Tonight 21 Jul Union

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 70s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Temperature Statistics

July Temperature

Spartanburg Memorial (23 miles)

  • Lowest 15 July, 2026

    68 °F

  • Average July

    81 °F

  • Highest 2 July, 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 °F

  • Average High 2021–2026

    71.9 °F
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