Weather World
Interstate State Park, WI Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Interstate State Park Weather Forecast
| REST OF TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  |  |  |  |  |  | | | | | |
| Chance of T-Storm | Sunny | Increasing Clouds | Partly Sunny | Mostly Clear | Chance of T-Storm | Chance of Showers | Mostly Sunny | Mostly Clear | Increasing Clouds | Mostly Cloudy | Partly Sunny |
| Lo: 59°FLo: 15°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C |
| POP: 50% | POP: 90% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 917 PM CDT Fri Sep 11 2026 
Interstate State Park Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Interstate State Park Weather Map
Interstate State Park Quick Facts
Interstate State Park Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 629 PM CDT Fri Sep 11 2026
Key Messages
- A few thunderstorms will develop late this afternoon and tonight, primarily north of I-94. A few storms could produce large hail, damaging winds, and potentially a tornado.
- Widespread rain arrives Monday, but forecast rain amounts have trended lower.
- Turning much cooler this weekend and next week with highs in the 60s to low 70s.
Discussion
... Issued at 126 PM CDT Fri Sep 11 2026
Despite being a tad on the breezy side, its turning out to be a nice albeit warm September afternoon. Curre...