7 Day Weather Forecast for Alton, IL
7 Day Forecast
Friday
 | Hi 100°F | Friday: A few clouds early, otherwise mostly sunny. High 101F. Winds SW at 5 to 10 mph. Friday night: Some clouds early will give way to generally clear conditions overnight. Low near 80F. Winds SSW at 5 to 10 mph. |
| Lo 78°F |
Saturday
| Hi 101°F | Saturday: Sunny. Highs 100 to 104F and lows in the upper 70s. |
| Lo 80°F |
Sunday
 | Hi 102°F | Sunday: Morning thunderstorms. Highs in the low 90s and lows in the low 70s. |
| Lo 78°F |
Monday
 | Hi 93°F | Monday: Mix of sun and clouds. Highs in the upper 80s and lows in the mid 60s. |
| Lo 71°F |
Tuesday
 | Hi 88°F | Tuesday: A few clouds. Highs in the upper 80s and lows in the upper 60s. |
| Lo 66°F |
Wednesday
| Hi 89°F | Wednesday : Mostly sunny. Highs in the low 90s and lows in the low 70s. |
| Lo 67°F |
Thursday
| Hi 93°F | Thursday: A mix of clouds and sun. Continued hot and humid. High around 100F. Winds W at 5 to 10 mph. Thursday night: Clear skies. Low 78F. Winds SW at 5 to 10 mph. |
| Lo 72°F |
Local Weather Radar
Current Conditions
Clear | |
Temperature80°F | Feels Like84°F |
Humidity85% | WindSE 3 mph |
North America Radar
Satellite Image
Forecast High Temperatures
