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Village of Lemont, ILLemont, IL Weather Forecast
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Lemont Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  | |  |  |  | |  |  |  |  | |
| Mostly Sunny | Patchy Fog | Patchy Fog | Partly Cloudy | Clearing | Mostly Clear | Partly Cloudy | Chance of T-Storm | Chance of Showers | Chance of Showers | Showers | Chance of Showers |
| Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 61°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C |
| POP: 50% | POP: 50% | POP: 50% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 111 PM CDT Sat Sep 26 2026 
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Issued: 203 PM CDT Sat Sep 26 2026
Key Messages
- Seasonable temperatures for late September are expected over the next several days.
- The next chances for widespread rainfall are forecasted to come mid to late next week.
Discussion
... Issued at 203 PM CDT Sat Sep 26 2026
A ridge of high pressure continues to reside over the Great Lakes in between the Nor`easter off the east coast and the broad troughing over the Pacific Northwest and Mountain West regions. This ridge is expected to remain in place through at least Monday which will ke...