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City of Jefferson, SDJefferson, SD Weather Forecast
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Jefferson Weather Forecast
| THIS AFTERNOON | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
 |  |  |  | | | | | |  |  |  |
| Chance of T-Storm | Partly Cloudy | Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers | Chance of Showers | Chance of T-Storm |
| Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C |
| POP: 70% | POP: 30% | POP: 50% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1154 AM CDT Tue Sep 08 2026 
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Issued: 112 PM CDT Tue Sep 8 2026
Key Messages
- Scattered showers and thunderstorms are expected this afternoon into the evening over northeast NE and northwest IA. There is a very small risk for severe storms, with the main threats quarter sized hail, wind gusts to 60 mph, and locally heavy rain.
- Severe weather possible on Friday afternoon and evening. Confidence is low due to the potential for a stronger cap.
- Additional very good chances (50-80 percent) for showers and thunderstorms return on Sunday.
- Cooler conditions arrive thi...