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McHenry Park Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  | |  |  |  |  |  | | | | |
| Drizzle | Chance of Rain | Chance of Rain | Chance of Rain | Mostly Cloudy | Clearing | Mostly Sunny | Mostly Clear | Mostly Sunny | Clear | Mostly Sunny | Clear |
| Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C | Hi: 49°FHi: 9°C | Lo: 30°FLo: -1°C | Hi: 50°FHi: 10°C | Lo: 31°FLo: -1°C | Hi: 59°FHi: 15°C | Lo: 35°FLo: 2°C | Hi: 60°FHi: 16°C | Lo: 39°FLo: 4°C |
| POP: 20% | POP: 70% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 106 PM CST Wed Nov 04 2026 
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Issued: 1158 AM CST Wed Nov 4 2026
Key Messages
- Times of rain continue through Friday, greatest chances occur later Thursday into Thursday night. Some drizzle could occur tonight.
- Occasionally breezy and cool conditions are expected through Friday.
- Freezing temperatures will be possible Friday and Saturday nights and Sunday night could have a small portion in far northwest IL.
Discussion
... Issued at 1140 AM CST Wed Nov 4 2026
A cutoff low pressure system continues lumbering northeastawrd and interacts with another vigorous southwar...