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Interstate State Park Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 | |  |  | |  | | |  | | | |
| Patchy Fog | Patchy Fog | Chance of Showers | Partly Sunny | Chance of Showers | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Sunny |
| Lo: 45°FLo: 7°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C |
| POP: 50% | POP: 40% | POP: 90% | POP: 70% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 928 PM CDT Tue Sep 15 2026 
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Issued: 642 PM CDT Tue Sep 15 2026
Key Messages
- Chilly tonight with lows in the 40s, & upper 30s possible across central Minnesota & western Wisconsin.
- Widespread soaking rain is likely Friday into early Saturday, with the heaviest amounts increasingly favored across far- southern Minnesota.
- Quiet weather returns for much of the weekend, with another chance for showers Sunday into early next week.
Discussion
... Issued at 345 PM CDT Tue Sep 15 2026
High pressure moves overhead tonight with clear skies & light winds setting up a chill...