Thomas, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Thomas Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
| Clearing | Chance of Showers | Mostly Cloudy | Chance of Rain | Rain | Rain | Rain | Chance of Rain | Chance of Rain | Partly Sunny | Partly Cloudy | Partly Cloudy |
| Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 39°FLo: 4°C | Hi: 49°FHi: 9°C | Lo: 35°FLo: 2°C | Hi: 45°FHi: 7°C Lo: 35°FLo: 2°C | Hi: 45°FHi: 7°C Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C Lo: 40°FLo: 4°C | Hi: 51°FHi: 11°C Lo: 40°FLo: 4°C | Hi: 59°FHi: 15°C | Hi: 51°FHi: 11°C Lo: 35°FLo: 2°C | Hi: 51°FHi: 11°C Lo: 35°FLo: 2°C |
| POP: 50% | POP: 70% | POP: 70% | POP: 70% | POP: 70% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 521 PM CDT Fri Oct 23 2026 

Thomas Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Thomas Weather Map
Thomas Quick Facts
Thomas Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 230 PM CDT Fri Oct 23 2026
Key Messages
- Southerly winds gusting between 30-40 mph are in place today, with the strongest winds located over northeastern South Dakota. Strong winds will continue over that area through this evening and into tonight.
- The combination of near-record heat with the strong winds leads to elevated fire weather concerns today. Grassland Fire Danger will reach the High to Very High category.
- A cold front will move through the region tonight through early Saturday morning. Winds behind will turn north...
Weather World