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Big Stone Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  |  |  | | |  |  |  |  | | |
| Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Chance of Showers | Mostly Clear | Partly Sunny |
| Lo: 61°FLo: 16°C | Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 61°FHi: 16°C Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 59°FHi: 15°C |
| POP: 50% | POP: 90% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 722 PM CDT Mon Sep 28 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 616 PM CDT Mon Sep 28 2026
Key Messages
- There is a marginal risk (level 1 out of 5) for severe thunderstorms this evening into the early overnight hours. There is a potential for a few stronger storms with 1" hail and wind gusts up to 60 mph.
- Rain over central SD will expand across northeastern SD and west central MN tonight, before exiting east during the day Tuesday.
- There is a 25-65% chance of rainfall over 0.5" this evening through the day Tuesday, and around an 85% chance over north central SD between the Missouri and...