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McArthur Park, IL Weather Forecast
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McArthur Park Weather Forecast
| THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Clearing | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of Showers | Partly Cloudy |
| Hi: 89°FHi: 32°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 89°FHi: 32°C | Lo: 75°FLo: 24°C | Hi: 85°FHi: 29°C | Lo: 71°FLo: 22°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C |
| POP: 50% | POP: 30% | POP: 20% | POP: 30% | POP: 50% | POP: 30% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 151 PM CDT Mon Aug 31 2026 
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Issued: 1233 PM CDT Mon Aug 31 2026
Key Messages
- Periodic shower and storms persist this week, though there will ample dry periods.
- Hotter and more humid conditions build midweek.
Discussion
... Issued at 200 AM CDT Mon Aug 31 2026
Thunderstorms have fizzled out, but isolated showers fester over the forecast area early this morning. Similar to last night, a southwest to northeast low level jet (LLJ) is expected to amplify prior to daybreak and help induce additional shower and storm coverage. There is lower confidence on the exact cov...