Weather World
Alton, IN 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Alton Weather Forecast
Alton, IN Weather Forecast Date: 407 PM EDT Sun Oct 18 2026
Weather forecast for Alton, IN
Tonight Lo: 39°F Lo: 4°C |
Tonight... Clear. Lows in the upper 30s. East winds up to 5 mph. |
Mon Hi: 70°FHi: 21°C Lo: 39°F Lo: 4°C |
Monday... Sunny. Patchy frost in the morning. Highs around 70. Light winds. |
| Tue Hi: 71°FHi: 22°C Lo: 41°F Lo: 5°C |
Tuesday... Sunny. Highs in the lower 70s. Light winds becoming northeast up to 5 mph in the afternoon. |
| Wed Hi: 71°FHi: 22°C Lo: 41°F Lo: 5°C |
Wednesday... Sunny. Highs in the lower 70s. |
| Thu Hi: 71°FHi: 22°C Lo: 45°F Lo: 7°C |
Thursday... Sunny. Highs in the lower 70s. |
| Fri Hi: 70°FHi: 21°C Lo: 41°F Lo: 5°C |
Friday... Sunny. Highs around 70. |
| Sat Hi: 71°FHi: 22°C Lo: 45°F Lo: 7°C |
Saturday... Sunny. Highs in the lower 70s. |
Alton Radar Loop
Use the map search tool if you want to place a location marker on the radar map...