| NWS Forecast for: Union County Issued by: National Weather Service Sioux Falls, SD Last Update: 1027 PM CDT Wed Aug 27 2025 |  |
| Overnight: Mostly clear. Lows in the mid 50s. South winds around 5 mph. Thursday: Sunny. Highs in the lower 80s. Southeast winds around 5 mph. Thursday Night: Partly cloudy. Lows in the upper 50s. East winds around 5 mph. Friday: Partly sunny. Highs in the upper 70s. Southeast winds 5 to 10 mph. Friday Night: Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows around 60. Southeast winds around 5 mph. Chance of rain 30 percent. Saturday: Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Highs in the mid 70s. Chance of rain 40 percent. Saturday Night: Mostly cloudy with a chance of showers. Lows in the upper 50s. Chance of rain 50 percent. Sunday: Mostly cloudy with a chance of showers. Highs in the lower 70s. Chance of rain 50 percent. Sunday Night: Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 40 percent. Labor Day: Partly sunny. Highs in the mid 70s. Monday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 50s. Tuesday: Mostly sunny. Highs around 80. Tuesday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. Wednesday: Mostly sunny. Highs in the lower 70s. | |
| Zone Forecast: Union County | |
Visit your local NWS office at: https://www.weather.gov/fsd/ |