Weather WorldUpper Rapid School, SD Weather Forecast
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Upper Rapid School Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  | |  | |  |  |  | | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm |
| Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 90°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: 85°FHi: 29°C | Lo: 60°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C |
| POP: 40% | POP: 20% | POP: 20% | POP: 40% | POP: 20% | POP: 40% | POP: 30% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1022 AM MDT Sun Aug 23 2026 
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Issued: 1048 AM MDT Sun Aug 23 2026
Key Messages
- Marginal to slight (1-2 out of 5) risk of severe thunderstorms later this afternoon/evening
- Isolated strong/severe thunderstorms possible Monday afternoon/evening
- Upper ridge will dominate the weather with subtle disturbances through next week with temperatures about 4-8F above normal
Discussion
...(This Afternoon Through Saturday) Issued at 1043 AM MDT Sun Aug 23 2026
16z surface analysis had frontal boundary from eastern MT to eastern CO and a trough from eastern CO into northeastern ...