| NWS Forecast for: Union County Issued by: National Weather Service Sioux Falls, SD Last Update: 942 AM CDT Sun Apr 12 2026 |  |
Rest Of Today: Mostly sunny. Much warmer with highs in the mid 80s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Tonight: Mostly clear. Lows in the mid 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph, becoming southeast 5 to 10 mph after midnight. Monday: Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Southeast winds 10 to 15 mph, becoming south in the afternoon. Chance of rain 40 percent. Monday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. West winds 10 to 15 mph, becoming north around 5 mph after midnight. Tuesday: Mostly sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 70s. North winds 10 to 15 mph. Chance of rain 30 percent. Tuesday Night: A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 40s. Chance of rain 40 percent. Wednesday: Partly sunny with a chance of showers. Highs in the lower 70s. Chance of rain 50 percent. Wednesday Night: Partly cloudy in the evening, then clearing. Lows in the upper 40s. Thursday: Sunny, warmer with highs in the lower 80s. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s. Friday: Partly sunny with a 30 percent chance of showers. Breezy and not as warm with highs in the mid 60s. Friday Night: Mostly cloudy with a chance of rain showers. A chance of snow showers after midnight. Breezy and much cooler with lows in the lower 30s. Chance of precipitation 30 percent. Saturday: Partly sunny. A chance of snow and rain showers in the morning. Much cooler with highs in the upper 40s. Chance of precipitation 30 percent. | |
| Zone Forecast: Union County | |
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