By knowing how cold, mild, warm, or hot the weather in Illinois, you will find it easier to plan your days.
Our 14 day weather forecast for Illinois becomes more accurate the closer to the date of your visit, so always be sure to check in frequently for any weather updates.
| Date | Temperatures | Wind | |||
|---|---|---|---|---|---|
| Tuesday, September 8 | 29 ° / 17 ° |  | Overcast | 8 Km/h | |
| Wednesday, September 9 | 25 ° / 20 ° |  | Light rain shower | 8 Km/h | |
| Thursday, September 10 | 26 ° / 19 ° | | Overcast | 6 Km/h | |
| Friday, September 11 | 28 ° / 17 ° |  | Patchy rain possible | 6 Km/h | |
| Saturday, September 12 | 30 ° / 20 ° | | Overcast | 9 Km/h | |
| Sunday, September 13 | 30 ° / 22 ° | | Light rain shower | 19 Km/h | |
| Monday, September 14 | 34 ° / 25 ° |  | Sunny | 12 Km/h | |
| Tuesday, September 15 | 23 ° / 13 ° | | Overcast | 15 Km/h | |
| Wednesday, September 16 | 19 ° / 10 ° |  | Partly cloudy | 5 Km/h | |
| Thursday, September 17 | 22 ° / 13 ° | | Sunny | 8 Km/h | |
| Friday, September 18 | 19 ° / 15 ° | | Light rain shower | 6 Km/h | |
| Saturday, September 19 | 16 ° / 11 ° | | Overcast | 13 Km/h | |
| Sunday, September 20 | 17 ° / 10 ° | | Overcast | 6 Km/h | |
| Monday, September 21 | 21 ° / 11 ° | | Clear | 5 Km/h | |
| Further Ahead | |||||
