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City of Sullivan, IllinoisSullivan, IL Weather Forecast
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Sullivan Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | VETERANS DAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | FRIDAY NIGHT |
 |  | | | | | |  |  |  | | |
| Mostly Clear | Sunny | Mostly Clear | Sunny | Clear | Sunny | Mostly Clear | Chance of Rain | Chance of Rain | Partly Cloudy | Partly Cloudy | Mostly Clear |
| Lo: 31°FLo: -1°C | Hi: 61°FHi: 16°C | Lo: 31°FLo: -1°C | Hi: 61°FHi: 16°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C Lo: 39°FLo: 4°C | Hi: 51°FHi: 11°C Lo: 30°FLo: -1°C | Hi: 51°FHi: 11°C Lo: 30°FLo: -1°C | Hi: 55°FHi: 13°C Lo: 29°FLo: -2°C |
| POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1052 PM CST Sat Nov 07 2026 
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Issued: 1026 PM CST Sat Nov 7 2026
Key Messages
- Precipitation chances have increased modestly for Wednesday, though the chances of greater than a quarter-inch of total rainfall are still limited (20-30%).
- After a stretch of high temperatures largely in the 60s from Sunday through Wednesday, another notable cool-down is anticipated later next week. There is a 50-80% chance of high temperatures below 50 degrees on Friday.
Discussion
... Issued at 146 PM CST Sat Nov 7 2026
Light winds are in place across central and southeast Illinois t...