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Thornbark Park, IL Weather Forecast
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Thornbark Park Weather Forecast
| EARLY THIS MORNING | TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| Patchy Fog | Partly Cloudy | Chance of Showers | Chance of T-Storm | Mostly Clear | Partly Cloudy | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Hi: 59°FHi: 15°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C |
| POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 236 AM CDT Tue Aug 25 2026 
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Issued: 330 AM CDT Tue Aug 25 2026
Key Messages
- Potential for strong to severe thunderstorms returns Wednesday afternoon/evening along a cold front, with greatest severe threat (level 2 of 5) east of I-55 and south of I-80.
Discussion
... Issued at 330 AM CDT Tue Aug 25 2026
All is quiet weather-wise across the area early this morning with temperatures in the 50s to lower 60s. Only concern is the potential for shallow ground fog development through daybreak, especially along river valleys and other typical fog prone low- lying spots....