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Sisseton Indian Reservation Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  | |  |  | | | | |  | |
| Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Partly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C Lo: 59°FLo: 15°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 60°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 60°FLo: 16°C |
| POP: 50% | POP: 50% | POP: 40% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 637 PM CDT Sun Aug 16 2026 
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Sisseton Indian Reservation Forecast Discussion
Issued: 644 PM CDT Sun Aug 16 2026
Key Messages
- There is a Marginal Risk, level 1 out of 5, for severe storms for portions of central South Dakota this evening and tonight and a Marginal Risk again late Monday afternoon through Monday night along and east of a line from Wheaton, MN to Hayes, SD. Main threats include 1 inch diameter hail and wind gusts of 60 mph. Brief heavy rainfall is also possible.
Discussion
... Issued at 1234 PM CDT Sun Aug 16 2026
Sfc high pressure slides to the southeast tonight. T...