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Lyndon, IL Weather Forecast
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Lyndon Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  | | |  |  | | | | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Chance of Showers |
| Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Lo: 65°FLo: 18°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C |
| POP: 50% | POP: 50% | POP: 90% | POP: 70% | POP: 50% | POP: 70% | POP: 70% | POP: 70% | POP: 50% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 126 AM CDT Wed Sep 16 2026 
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Issued: 159 AM CDT Wed Sep 16 2026
Key Messages
- An active weather pattern continues through the weekend with rounds of rain, heavy at times. There will be brief dry periods between each round.
- Additional rainfall of 2-3 inches through Monday is becoming likely (50-80%) across eastern Iowa and northwest Illinois, keeping a risk of flash flooding around. Localized areas of 5+ inches remain possible (5-15%) which could lead to sharp rises in small streams and creeks.
Aviation
/06Z TAFS THROUGH 06Z THURSDAY/... Issued at 1243 AM CDT Wed...