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St. Thomas School, SD Weather Forecast
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St. Thomas School Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
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| Patchy Fog | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Partly Cloudy |
| Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 60°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C |
| POP: 100% | POP: 100% | POP: 50% | POP: 40% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 609 AM CDT Thu Sep 17 2026 
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Issued: 638 AM CDT Thu Sep 17 2026
Key Messages
- Pockets of drizzle will continue through mid-morning mainly east of I-29.
- Patchy Fog will continue through late morning. Locally dense patches could lead to visibilities of 1/2 mile or less. Be prepared for rapidly changing visibility conditions.
- Showers and thunderstorms will lift through the area starting tonight. While severe weather is not expected, locally heavy rainfall will be the main threat. Widespread accumulations of 1-2+ inches are expected along and north of I-90. Minor ...