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City of Rapid City, SDRapid City, SD Weather Forecast
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Rapid City Weather Forecast
| LATE THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  |  |  | |  | | |  | | | |
| Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Rain | Partly Cloudy | Chance of Rain | Rain and Snow | Rain and Snow | Rain and Snow | Rain and Snow |
| Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 45°FLo: 7°C | Hi: 51°FHi: 11°C | Lo: 35°FLo: 2°C | Hi: 49°FHi: 9°C | Lo: 31°FLo: -1°C | Hi: 45°FHi: 7°C | Lo: 35°FLo: 2°C |
| POP: 30% | POP: 20% | POP: 40% | POP: 40% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 347 PM MDT Wed Oct 21 2026 
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Issued: 1221 PM MDT Wed Oct 21 2026
Key Messages
- Unseasonably warm temperatures Thursday and Friday (10-20F above average).
- Elevated to near critical fire wx concerns across much of the area Friday afternoon and evening
- Much cooler this weekend with chances for light rain and possibly some snow Sunday.
Discussion
...(This Evening Through Wednesday) Issued at 1221 PM MDT Wed Oct 21 2026
Upper level ridge continues to influence conditions across the area today with light southerly flow and WAA supporting seasonably warm temperatures in ...