| NWS Forecast for: O'Brien County Issued by: National Weather Service Sioux Falls, SD Last Update: 238 AM CDT Sun Oct 11 2026 | |
| Today: Sunny. Highs in the upper 80s. South winds 10 to 15 mph with gusts up to 30 mph. Tonight: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 60s. South winds 5 to 10 mph with gusts up to 20 mph, becoming west after midnight. Columbus Day: Mostly sunny. Highs in the mid 80s. East winds 5 to 10 mph, becoming southwest in the afternoon. Monday Night: Mostly clear in the evening, then becoming partly cloudy. Cooler with lows in the mid 50s. Northwest winds 5 to 10 mph. Tuesday: Sunny. Not as warm with highs in the upper 60s. North winds 5 to 10 mph. Tuesday Night: Partly cloudy. Lows in the upper 40s. Wednesday: Mostly sunny. Highs in the mid 60s. Wednesday Night: Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 40s. Chance of rain 50 percent. Thursday: Showers likely, mainly in the morning. Highs in the lower 60s. Chance of rain 60 percent. Thursday Night: Mostly cloudy. A chance of showers in the evening. Lows in the lower 40s. Chance of rain 50 percent. Friday: Partly sunny and breezy. Highs in the mid 50s. Friday Night: Partly cloudy in the evening, then clearing. Lows in the mid 30s. Saturday: Sunny. Highs in the mid 50s. | |
| Zone Forecast: O'Brien County | |
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