| NWS Forecast for: Yankton County Issued by: National Weather Service Sioux Falls, SD Last Update: 344 AM CDT Thu Jul 9 2026 |  |
Today: Mostly cloudy this morning, then becoming mostly sunny. Highs in the upper 80s. North winds 5 to 10 mph. Tonight: Mostly clear in the evening, then becoming mostly cloudy. Humid with lows in the mid 60s. East winds around 5 mph. Friday: Mostly cloudy in the morning, then becoming partly sunny. Humid with highs in the upper 80s. Southeast winds 5 to 10 mph. Friday Night: Mostly cloudy in the evening, then clearing. Humid with lows in the mid 60s. South winds 5 to 10 mph. Saturday: Sunny with highs in the lower 90s. South winds 5 to 10 mph. Saturday Night: Mostly clear. Lows in the upper 60s. Sunday: Sunny, hot with highs in the mid 90s. Sunday Night: Clear. Lows around 70. Monday: Sunny, hot with highs in the upper 90s. Monday Night: Mostly clear. Lows in the lower 70s. Tuesday: Sunny, hot with highs in the upper 90s. Tuesday Night: Mostly clear. Lows in the lower 70s. Heat index values in the upper 90s early in the evening. Wednesday: Sunny, hot with highs in the upper 90s. | |
| Zone Forecast: Yankton County | |
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