| NWS Forecast for: Union County Issued by: National Weather Service Sioux Falls, SD Last Update: 1015 PM CST Sun Nov 8 2026 | |
| Overnight: Mostly clear. Lows in the lower 40s. South winds 5 to 10 mph. Monday: Mostly sunny. Highs in the mid 60s. Southwest winds 5 to 10 mph, becoming northwest in the afternoon. Monday Night: Partly cloudy. Lows in the upper 30s. Northwest winds around 5 mph. Tuesday: Mostly sunny. Highs in the upper 50s. South winds around 5 mph. Tuesday Night: Partly cloudy. Lows in the lower 40s. South winds around 5 mph, becoming west with gusts up to 20 mph after midnight. Veterans Day: Mostly sunny with a chance of sprinkles. Highs in the lower 50s. Wednesday Night: Partly cloudy. Cooler with lows in the lower 30s. Thursday: Mostly sunny. Cooler with highs in the lower 40s. Thursday Night: Mostly clear. Lows in the upper 20s. Friday: Sunny. Highs in the mid 40s. Friday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 30s. Saturday: Mostly sunny. Highs around 50. Saturday Night: Partly cloudy. Lows in the upper 30s. Sunday: Mostly sunny. Highs in the upper 50s. | |
| Zone Forecast: Union County | |
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