No
you don't need a jacket based on the weather in Illinois, USA 1 second ago
84°F29°C & Clear
Wind is 2 mph3 km/h from the Southwest, gusting to 4 mph6 km/h
| July 14 | ||||
| 8pm | 84°F29°C | 2 mph3 km/h South | Clear | |
| 9pm | 81°F27°C | 0 mph1 km/h South | Clear | |
| 10pm | 78°F25°C | 3 mph5 km/h South | Mostly Clear | |
| 11pm | 75°F24°C | 3 mph6 km/h Southeast | Mostly Clear | |
| July 15 | ||||
| 12am | 75°F24°C | 3 mph5 km/h Southeast | Mostly Clear | |
| 1am | 73°F23°C | 3 mph4 km/h Southeast | Mostly Clear | |
| 2am | 72°F22°C | 4 mph6 km/h Southeast | Partly Cloudy | |
| 3am | 71°F21°C | 4 mph6 km/h Southeast | Mostly Clear | |
| 4am | 70°F21°C | 4 mph7 km/h Southeast | Mostly Clear | |
| 5am | 70°F21°C | 4 mph7 km/h Southeast | Mostly Clear | |
| 6am | 69°F21°C | 4 mph7 km/h Southeast | Mostly Clear | |
| 7am | 69°F21°C | 4 mph7 km/h Southeast | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 14 | 68°F20°C | 85°F29°C | 3 mph5 km/h from South | Partly Cloudy | Mostly Clear |
| July 15 | 69°F21°C | 85°F30°C | 6 mph10 km/h from South | Partly Cloudy | Mostly Clear |
| July 16 | 71°F22°C | 87°F31°C | 8 mph12 km/h from Southwest | Partly Cloudy | Thunderstorms |
| July 17 | 68°F20°C | 83°F28°C | 8 mph13 km/h from Northwest | Rain | Drizzle |
| July 18 | 65°F18°C | 82°F28°C | 4 mph7 km/h from Northeast | Drizzle | Mostly Cloudy |
| July 19 | 72°F22°C | 85°F29°C | 7 mph11 km/h from South | Thunderstorms | Rain |
| July 20 | 73°F23°C | 85°F29°C | 7 mph11 km/h from Southwest | Rain | Drizzle |
No
Low of 69°F21°C, High of 85°F30°CWind: 6 mph10 km/h
Precipitation: 42% rain