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Lyon School Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
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| Partly Cloudy | Chance of Showers | Mostly Clear | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers Likely | Showers Likely | Chance of Showers | Chance of Showers |
| Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 71°FHi: 22°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C |
| POP: 40% | POP: 30% | POP: 70% | POP: 70% | POP: 70% | POP: 70% | POP: 60% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1221 AM CDT Sun Sep 13 2026 
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Issued: 629 PM CDT Sat Sep 12 2026
Key Messages
- Turning cooler tomorrow with a chance for afternoon showers.
- Waves of heavy rain producing thunderstorms possible in the general region early to mid next week.
Discussion
... Issued at 130 PM CDT Sat Sep 12 2026
A cold front is pushing into northwest Illinois early this afternoon and will continue to shift across the forecast area through this evening. While dewpoints have been slowly climbing into the upper 60s/near 70 degrees ahead of this boundary, forecast soundings remain generally...