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Onalaska Park Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 | | | |  |  |  |  | |  | | |
| Patchy Fog | Patchy Fog | Patchy Fog | Patchy Fog | Partly Cloudy | Mostly Sunny | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Partly Sunny | Partly Cloudy |
| Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 55°FHi: 13°C | Hi: 55°FHi: 13°C Lo: 40°FLo: 4°C |
| POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 636 PM CDT Tue Oct 20 2026 
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Issued: 624 PM CDT Tue Oct 20 2026
Key Messages
- Above normal temperatures are expected throughout the week.
- Dry conditions continue before low potential for precipitation returns this weekend (10-30%).
- There is high forecast uncertainty regarding temperatures and rain chances early next week.
Discussion
... Issued at 1236 PM CDT Tue Oct 20 2026
Rest of Today - Friday: Dry with Above Normal Temperatures
Rather mundane weather continues across the region over the next several days as tropospheric deep ridging remains the dominant synopt...