Weather WorldMountain, IL 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Mountain Weather Forecast
Mountain, IL Weather Forecast Date: 538 AM CDT Sat Sep 12 2026
Weather forecast for Mountain, IL
Today Hi: 89°FHi: 32°C Lo: 65°F Lo: 18°C |
Today... Patchy fog this morning. Mostly sunny. Highs in the upper 80s. Southwest winds around 5 mph, becoming west around 5 mph this afternoon. |
Sun Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Sunday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Cooler with highs in the upper 70s. Northeast winds 5 to 10 mph. Chance of rain 50%. |
| Mon Hi: 81°FHi: 27°C Lo: 70°F Lo: 21°C |
Monday... Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning. Highs in the lower 80s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 40%. |
| Tue Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Tuesday... Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 50%. Heat index values up to 100. |
| Wed Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Wednesday... Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the upper 80s. Chance of rain 50%. |
| Thu Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Thursday... Showers likely in the morning, then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 70%. |
| Fri Hi: 80°FHi: 27°C |
Friday... Mostly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs around 80. Chance of rain 30%. |
Mountain Radar Loop
Use the map search tool if you want to place a location marker on the radar map...