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Pearson Slough Weather Forecast
| THIS AFTERNOON | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  | | | | |  |  |  | |  |  |
| Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Mostly Clear |
| Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Hi: 79°FHi: 26°C Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C Lo: 55°FLo: 13°C | Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C |
| POP: 40% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1236 PM CDT Thu Aug 20 2026 
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Pearson Slough Forecast Discussion
Issued: 1223 PM CDT Thu Aug 20 2026
Key Messages
- Marginal Risk (level 1 of 5) of severe weather from 5-8 PM mainly southeast of a line from Watertown to Ortonville.
- Mainly dry conditions will continue through next Wednesday. However, there is a 30-60% chance for showers and thunderstorms during the day Sunday over central SD, and Sunday night across much of central to northeastern SD.
Discussion
... Issued at 208 AM CDT Thu Aug 20 2026
Conditions remain fairly quiet across the forecast area early this mor...