Weather World
Clapper, IL Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Clapper Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY |
 |  |  |  | | |  |  | | |  | |
| Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 60°FLo: 16°C | Hi: 70°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C |
| POP: 20% | POP: 20% | POP: 50% | POP: 70% | POP: 70% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 742 PM CDT Fri Sep 18 2026 
Clapper Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Clapper Weather Map
Clapper Quick Facts
Clapper Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 548 PM CDT Fri Sep 18 2026
Key Messages
- Unseasonable Heat & Temperature Contrast: Areas south of the front will see heat indices near 100 F through Saturday. This is primarily near and south of Interstate 72.
- Thunderstorms & Microburst Risk: Scattered showers and storms are forecast through Sunday. On Saturday, stronger storms could produce localized damaging wind gusts up to 60 mph and quarter-sized hail.
- Significantly Cooler Next Week: High confidence that the hot air will be pushed south by Monday. Expect comfortable, d...