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Thomas Lake, SD Weather Forecast
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Thomas Lake Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  | | |  |  | |  | | | | |
| Chance of T-Storm | Partly Sunny | Chance of T-Storm | Partly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Chance of T-Storm | Partly Sunny |
| Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C |
| POP: 70% | POP: 30% | POP: 40% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 607 PM CDT Fri Aug 28 2026 
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Issued: 650 PM CDT Fri Aug 28 2026
Key Messages
- Storms develop this evening and continue overnight tonight. A Marginal Risk (level 1 of 5) for severe weather is in place. Hail of one inch in diameter and wind gusts of 60 to 70 miles per hour will be the main severe hazards.
- Saturday evening, A Slight Risk (level 2 out of 5) for severe weather is in place across north central SD, with a Marginal Risk for areas along and west of the James River Valley. Hail of one inch in diameter and wind gusts of 60 to 70 miles per hour are once a...