Weather WorldChain Lake, IL Weather Forecast
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Chain Lake Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | |  |  | |  |  | | |  | |
| Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Chance of Showers | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers |
| Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C |
| POP: 30% | POP: 30% | POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 337 PM CDT Mon Oct 26 2026 
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Issued: 231 PM CDT Mon Oct 26 2026
Key Messages
- Above-normal warmth and dry conditions are expected through Friday, with afternoon temperatures in the 70s to near 80 degrees, solidifying one of the warmest Octobers on record.
- Scattered, light showers carry a low chance (10% to 30%) Thursday into Friday, primarily near and north of Interstate 72, offering no significant relief to ongoing dry conditions.
- A pattern shift is likely heading into the weekend and persisting into next week, increasing confidence in cooler, windier, and we...