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Great Oaks, IL Weather Forecast
1380 County Road 900 North, Lacon, IL 61540Quick Weather Clicks
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Great Oaks Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY |
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| Chance of T-Storm | Chance of T-Storm | Sunny | Mostly Clear | Mostly Sunny | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C |
| POP: 40% | POP: 20% | POP: 80% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 757 AM CDT Sun Aug 16 2026 
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Issued: 556 AM CDT Sun Aug 16 2026
Key Messages
- Flooding continues across portions of central IL in a corridor from Fulton and southern Knox County to Vermilion County due to 4 to 7 inches of rain that fell yesterday and additional rain moving through this morning.
- Additional clusters of thunderstorms are forecast again late this afternoon into the overnight hours. SPC has a slight risk (level 2 of 5) south of I-70 and a marginal risk for areas east of the IL River Valley for damaging winds.
- Cooler an...