Summit, WI Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Summit Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Partly Cloudy | Mostly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Chance of Showers | Chance of Showers | Partly Sunny | Chance of Showers |
| Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Hi: 51°FHi: 11°C Lo: 40°FLo: 4°C | Hi: 51°FHi: 11°C Lo: 40°FLo: 4°C | Lo: 31°FLo: -1°C | Hi: 51°FHi: 11°C | Lo: 39°FLo: 4°C | Hi: 60°FHi: 16°C | Lo: 41°FLo: 5°C |
| POP: 30% | POP: 40% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1048 AM CDT Fri Oct 23 2026 

Summit Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Summit Weather Map
Summit Quick Facts
Summit Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 619 AM CDT Fri Oct 23 2026
Key Messages
- Dense fog into early Friday morning. Dense Fog Advisory until 9 AM Friday much of northeast and east-central Wisconsin.
- Staying mild into the weekend, with high temperatures inland of Lake Michigan warming into the mid 60s to low 70s.
- Rain chances (20-40%) Saturday night over northern WI, and late Monday into Tuesday over central WI.
- Cooler start to next week, with highs mainly in the 50s.
Discussion
... Issued at 1055 PM CDT Thu Oct 22 2026
Dense fog into early Friday morning...Lingeri...
Weather World