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Oconee Weather Forecast
| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  | | |  |  | |  | | | | |
| Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Fri Oct 23 2026 
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Issued: 203 AM CDT Fri Oct 23 2026
Key Messages
- Sunny mild days and cool nights persist across central and southeast Illinois through Wednesday, with highs in the 70s and lows in the 40s.
- A cold front moves across the region mid to late next week, though rain chances look pretty slim (30% or less), with temperatures cooling a bit for the end of next week.
Discussion
... Issued at 203 AM CDT Fri Oct 23 2026
The blocking pattern continues over the eastern half of the United States. With the ridging not going anywhere any time soon, cle...