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Mitchell Lake, SD Weather Forecast
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Mitchell Lake Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | |  |  | | |  | | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Partly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Sunny |
| Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C |
| POP: 20% | POP: 20% | POP: 20% | POP: 40% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 636 PM CDT Tue Aug 18 2026 
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Mitchell Lake Forecast Discussion
Issued: 644 PM CDT Tue Aug 18 2026
Key Messages
- A Marginal Risk (level 1 out of 5) for severe weather has been posted for along and south of the I-90 corridor late this afternoon, evening and into the overnight hours. The main threats will be hail around 1" diameter and winds up around 60 mph.
- A Marginal Risk (level 1 out of 5) for severe weather has been issued for between the Missouri and James valley regions Wednesday late afternoon and through the evening hours. Hail around 1" diameter and damagin...