Weather WorldGrignon Lake, WI 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Grignon Lake Weather Forecast
Grignon Lake, WI Weather Forecast Date: 937 AM CDT Fri Aug 28 2026
Weather forecast for Grignon Lake, WI
Today Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Today... Mostly sunny in the morning then becoming partly cloudy. Highs in the upper 70s. Light and variable wind. |
Sat Hi: 75°FHi: 24°C Lo: 61°F Lo: 16°C |
Saturday... Mostly cloudy. A chance of showers in the morning, then showers likely and a slight chance of thunderstorms in the afternoon. Highs in the middle 70s. Southwest wind 5 to 10 mph. Chance of rain 70%. |
Sun Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Sunday... Humid. Mostly cloudy. A chance of showers in the afternoon. Highs in the lower 80s. South wind 5 to 10 mph. Chance of rain 40%. |
| Mon Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Monday... Mostly cloudy with a 40% chance of showers and thunderstorms. Lows in the middle 60s. Highs in the middle 80s. |
| Mon Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Monday... Mostly cloudy with a 40% chance of showers and thunderstorms. Lows in the middle 60s. Highs in the middle 80s. |
| Tue Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Tuesday... Partly cloudy. Highs in the middle 80s. Lows in the lower 60s. |
| Wed Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Wednesday... Partly cloudy. Highs in the middle 80s. Lows in the lower 60s. |
| Thu Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Thursday... Partly cloudy. Highs in the middle 80s. Lows in the lower 60s. |
Grignon Lake Radar Loop
Use the map search tool if you want to place a location marker on the radar map...