Union Weather Forecast

    • 72
    • 92

    Partly Sunny

    • 72
    • 94

    Mostly Sunny

    • 72
    • 96

    Mostly Sunny

    • 74
    • 97

    Hot

    • 74
    • 98

    Hot

    • 74
    • 97

    Chance Thunderstorms

Today 30 Jun Union

Mostly sunny. Humid with Highs in the lower 90s. Light and variable Winds, becoming northeast around 5 Mph in the afternoon. Heat index Values up to 100.

Tonight 30 Jun Union

Partly cloudy. Lows in the lower 70s. Light and variable Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Union Temperature Statistics

June Temperature

Spartanburg Memorial (23 miles)

  • Lowest 3 June, 2026

    51.8 °F

  • Average June

    75 °F

  • Highest 12 June, 2026

    93.2 °F

Climate (2021–2026)

Spartanburg Memorial (23 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    51.2 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    71.9 °F
Get WillyWeather+ to remove ads