Weather WorldAtlas, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Atlas Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY |
 |  |  |  |  |  |  | | | | |
| Chance of Showers | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Clear | Mostly Clear | Mostly Clear | Clear | Mostly Clear | Mostly Clear |
| Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C Lo: 49°FLo: 9°C |
| POP: 50% | POP: 50% | POP: 100% | POP: 100% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 758 AM CDT Wed Sep 30 2026 
Atlas Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Atlas Weather Map
Atlas Quick Facts
Atlas Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 615 AM CDT Wed Sep 30 2026
Key Messages
- Widespread rain will overspread the area from late tonight through Thursday, and continue Thursday night. Rain is expected to end from north to south from early Friday morning through the afternoon. One to two inches of rain is expected, primarily across central and northeast Missouri and west central Illinois. Locally higher amounts are possible.
- Above normal temperatures will continue today and Thursday for most of the area. A cold front will move through the area by Friday morning...