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Petrolia Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  |  | | |  |  | |  | |  |
| Mostly Cloudy | Mostly Sunny | Mostly Clear | Clearing | Clear | Sunny | Chance of Showers | Showers | Chance of Showers | Chance of Showers | Chance of Showers | Partly Sunny |
| Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 59°FLo: 15°C | Hi: 90°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C |
| POP: 30% | POP: 60% | POP: 50% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Sun Oct 11 2026 
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Issued: 240 AM CDT Sun Oct 11 2026
Key Messages
- Near-record warmth can be expected today and Monday, with afternoon high temperatures in the 80s today and upper 80s to lower 90s Monday. Tuesday looks equally warm south of I-72.
- An extended period of rain chances is on track Tuesday night through Thursday. There is a Marginal Risk for severe thunderstorms in west-central IL Tuesday evening, otherwise severe weather potential appears low at this point.
- Colder air will arrive next weekend, although the amount of cooling remains uncer...