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Oneal Lake, SD Weather Forecast
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Oneal Lake Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  | |  |  | | | |  |  | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Sunny | Clear | Sunny | Partly Cloudy | Partly Sunny | Chance of T-Storm | Mostly Cloudy |
| Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 60°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C |
| POP: 50% | POP: 20% | POP: 20% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 224 PM CDT Sun Aug 23 2026 
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Oneal Lake Forecast Discussion
Issued: 238 PM CDT Sun Aug 23 2026
Key Messages
- Showers and storms should be a bit more widespread tonight (50- 70%). Locally heavy rain and isolated severe storms are possible. Coverage and intensity have been trending down a bit however.
- Monday evening and night could see an isolated severe storm, with the better chances in central SD and also near highway 14.
- Otherwise most days through next week will see highs in the 80s and lows in the upper 50s to mid 60s.
Discussion
... Issued at 237 PM CDT Sun Aug 23 2026
A pair of waves are ...