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Cornwall School Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  | | |  |  | |  |  | |
| Partly Cloudy | Mostly Sunny | Chance of Showers | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Partly Sunny | Chance of T-Storm | Chance of Showers | Mostly Clear | Partly Sunny |
| Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C |
| POP: 20% | POP: 50% | POP: 30% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 333 PM CDT Sun Aug 16 2026 
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Issued: 1234 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...