Weather WorldLyons Park, IL Weather Forecast
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Lyons Park Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | |  |  |  |  | | | |
| Partly Sunny | Partly Cloudy | Sunny | Clear | Sunny | Mostly Cloudy | Chance of Showers | Chance of Showers | Showers | Showers | Chance of Showers | Chance of Showers |
| Hi: 75°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C Lo: 61°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C |
| POP: 40% | POP: 50% | POP: 60% | POP: 60% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 637 AM CDT Sun Sep 27 2026 
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Issued: 526 AM CDT Sun Sep 27 2026
Key Messages
- Quiet and tranquil weather continues across central Illinois through Monday night, with seasonable high temperatures in the mid-70s. Temperatures will warm into the lower 80s on Tuesday and Wednesday, with the next rain system arriving Wednesday night into Thursday.
- Widespread rain will fall Thursday and Friday. The exact location of the heaviest rainfall and total accumulations remain highly uncertain.
- Dry and cooler weather returns on Saturday before a complex weather pattern bring...