Olsonville Roadside Park, SD Weather Forecast
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Olsonville Roadside Park Weather Forecast
| TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
| Sunny | Clear | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Rain | Clearing | Chance of Rain | Mostly Clear |
| Hi: 71°FHi: 22°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C |
| POP: 20% | POP: 50% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 547 AM CDT Tue Oct 20 2026 

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Issued: 513 AM MDT Tue Oct 20 2026
Key Messages
- Warm and dry weather through much of this week.
Discussion
...(This Evening Through Monday) Issued at 1244 PM MDT Mon Oct 19 2026
Current upper air analysis shows southwest flow over the US as trof deepens off the coast of the PNW. The CWA sits under mostly clear skies with sfc stations reporting temps in the upper 50s to low 60s.
Broad ridging will dominate the pattern through this week, keeping conditions warm and dry. Weak shortwave and attendant cool front will cross the region late ...
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