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Mccart Slough, SD Weather Forecast
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Mccart Slough Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | |  |  | | |  | | |
| Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Partly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear |
| Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C |
| POP: 20% | POP: 40% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1119 AM CDT Sun Aug 16 2026 
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Mccart Slough Forecast Discussion
Issued: 1259 PM CDT Sun Aug 16 2026
Key Messages
- Isolated non-severe showers and thunderstorms will develop along the Missouri River after midnight. This activity may drift eastward into mid-day Monday.
- Monday brings the week`s biggest weather risk. While exact storm coverage is uncertain, isolated to scattered severe storms may be possible after 4pm, with greatest risks after 7pm. Any storm could produce 60 mph winds, golfball size hail, and a very low tornado risk may develop.
- Lingering morning rain ...