| NWS Forecast for: Union County Issued by: National Weather Service Greenville-Spartanburg, SC Last Update: 654 AM EDT Wed Jul 22 2026 | |
| Today: Partly sunny this morning, then becoming mostly sunny. Highs in the lower 90s. Southwest winds 5 to 10 mph with gusts up to 25 mph. Tonight: A chance of thunderstorms. Showers likely. Lows in the lower 70s. Southwest winds 5 to 10 mph. Chance of rain 70 percent. Thursday: Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. Humid with highs in the mid 80s. Southwest winds around 5 mph, becoming northwest around 5 mph in the afternoon. Chance of rain 90 percent. Thursday Night: Showers with thunderstorms likely in the evening, then showers with a chance of thunderstorms after midnight. Lows in the upper 60s. Northeast winds around 5 mph. Chance of rain 90 percent. Friday: Showers likely. A chance of thunderstorms in the afternoon. Humid with highs in the lower 80s. Northeast winds around 5 mph. Chance of rain 70 percent. Friday Night: A chance of thunderstorms in the evening. Showers likely. Lows in the upper 60s. Chance of rain 70 percent. Saturday: Showers likely in the morning, then showers with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 80 percent. Saturday Night: Mostly cloudy with a chance of thunderstorms. Showers likely, mainly in the evening. Lows in the upper 60s. Chance of rain 70 percent. Sunday: Mostly sunny. Highs in the upper 80s. Sunday Night: Mostly clear. Lows around 70. Monday: Sunny. Highs in the lower 90s. Heat index values up to 100. Monday Night: Mostly clear. Lows in the lower 70s. Tuesday: Mostly sunny. Highs in the lower 90s. Heat index values up to 100. | |
| Zone Forecast: Union County | |
Visit your local NWS office at: https://www.weather.gov/gsp/ |