Weather WorldLyon Park, WI Weather Forecast
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Lyon Park Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  | |  |  |  | |  |  |  |  |  |
| Clear | Patchy Fog | Clear | Sunny | Chance of Showers | Partly Cloudy | Mostly Clear | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Showers | Partly Sunny |
| Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C |
| POP: 50% | POP: 40% | POP: 70% | POP: 90% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 547 PM CDT Wed Sep 09 2026 
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Issued: 627 PM CDT Wed Sep 9 2026
Key Messages
- Chances for thunderstorms return on Friday night into Saturday morning, though the severe weather threat is low.
- Potential for heavy rainfall and thunderstorms increases Sunday into Monday as a stronger low pressure system tracks near the region, though forecast uncertainty remains high.
Discussion
... Issued at 131 PM CDT Wed Sep 9 2026
RAP analysis indicates a cold front dropping into southeast Wisconsin early this afternoon, with surface high pressure centered over the northern Plain...