Lake Monona, WI Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Lake Monona Weather Forecast
| EARLY THIS MORNING | TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
| Patchy Fog | Chance of T-Storm | Chance of T-Storm | Clearing | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers |
| Hi: 90°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | |
| POP: 20% | POP: 20% | POP: 20% | POP: 30% | POP: 60% | POP: 50% | POP: 50% | POP: 30% | POP: 20% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 430 AM CDT Tue Sep 01 2026 

Lake Monona Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Lake Monona Weather Map
Lake Monona Quick Facts
Lake Monona Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 551 AM CDT Tue Sep 1 2026
Key Messages
- Patchy fog is possible early this morning and could be dense in spots.
- Unseasonably warm and muggy conditions continue through the end of the work week. Upper 90s to near 100 degree heat indices will be possible daily in areas experiencing ample sunshine.
- Occasional storm chances continue into the beginning of the weekend, with plenty of dry periods in between. Some storms could be on the stronger side.
Aviation
... Issued 550 AM CDT Tue Sep 1 2026
Patchy fog early this morning should r...
Weather World