| NWS Forecast for: Union County Issued by: National Weather Service Sioux Falls, SD Last Update: 556 PM CDT Sun Apr 12 2026 | |
Tonight: Mostly clear. Lows in the lower 50s. West winds 15 to 20 mph with gusts up to 30 mph, becoming southeast around 5 mph after midnight. Monday: Partly sunny. Highs in the mid 80s. Southeast winds 10 to 15 mph, becoming south in the afternoon. Monday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. West winds 10 to 15 mph, becoming northwest around 5 mph after midnight. Tuesday: Mostly sunny. A chance of showers in the afternoon. Highs in the upper 70s. North winds 10 to 15 mph. Chance of rain 30 percent. Tuesday Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers with a slight chance of thunderstorms. Lows around 50. Northeast winds around 10 mph. Chance of rain 50 percent. Wednesday: Partly sunny. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 70s. Chance of rain 60 percent. Wednesday Night: Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 40s. Chance of rain 30 percent. Thursday: Sunny. Highs in the lower 80s. Thursday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s. Friday: Partly sunny. A chance of showers in the afternoon. Breezy and not as warm with highs in the mid 60s. Chance of rain 40 percent. Friday Night: Mostly cloudy with a chance of rain showers. A chance of snow showers after midnight. Breezy and much cooler with lows around 30. Chance of precipitation 40 percent. Saturday: Mostly sunny with a chance of snow and rain showers. Much cooler with highs in the upper 40s. Chance of precipitation 40 percent. Saturday Night: Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 20s. Sunday: Sunny. Not as cool with highs around 60. | |
| Zone Forecast: Union County | |
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