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Oreana, IL Weather Forecast
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Oreana Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY |
 |  |  |  |  |  | | | | | | |
| Chance of T-Storm | Chance of Showers | Mostly Cloudy | Partly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Lo: 61°FLo: 16°C | Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C Lo: 55°FLo: 13°C |
| POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 417 PM CDT Sun Sep 20 2026 
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Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 550 PM CDT Sun Sep 20 2026
Key Messages
- A Marginal Risk (level 1 of 5) of severe weather exists near and south of the I-72 corridor today. The primary risk will be isolated strong wind gusts during the afternoon and early evening.
- Much cooler weather will be on tap this week as high temperatures drop into the 60s everywhere north of I-70 Monday through Wednesday.
Discussion
... Issued at 215 PM CDT Sun Sep 20 2026
NEAR TERM /THROUGH TONIGHT/
Latest surface observation network and mesonet analysis show an effective surface boun...