Custer County, SD Weather Forecast
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Custer County Weather Forecast
| THIS AFTERNOON | 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 | Partly Cloudy | Chance of Rain | Clearing | Mostly Clear | Sunny | Mostly Clear |
| Hi: 70°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 41°FLo: 5°C | Hi: 51°FHi: 11°C | Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C | Lo: 35°FLo: 2°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 PM MDT Tue Oct 20 2026 

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Issued: 1254 PM MDT Tue Oct 20 2026
Key Messages
- Warm and dry weather through much of this week.
Discussion
...(This Evening Through Tuesday) Issued at 1254 PM MDT Tue Oct 20 2026
Current upper level analysis shows broad ridging over the central and western US with deepening trof off the west coast. The CWA sits under upper level southwest flow and clear skies. Sfc stations report light southerly winds across much of western SD with temperatures in the 60s to low 70s.
Weak front will cross the CWA overnight with the only impacts being ...
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