Sweeney, SD Weather Forecast
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Sweeney Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
| Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Mostly Cloudy | Showers Likely | Chance of T-Storm | Partly Sunny | Mostly Clear | Partly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 70°FHi: 21°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C |
| POP: 20% | POP: 50% | POP: 60% | POP: 50% | POP: 50% | POP: 60% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 122 PM CDT Wed Sep 23 2026 

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Issued: 221 PM CDT Wed Sep 23 2026
Key Messages
- Scattered rain showers to weak thunderstorms will continue this afternoon. As showers move eastward into northeastern SD and western MN tonight, coverage will become more dense and rain rates will increase. Through Thursday morning, there is a 60-90% chance to see a quarter of an inch of rain or more along and east of the James River.
- Another round of rain arrives Friday afternoon into Saturday morning. There is a 30-60% chance to see a quarter of an inch through more through Saturda...
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