No
you don't need a jacket based on the weather in Vernon Hills, IL, USA 1 second ago
73°F23°C & Clear
Wind is 5 mph8 km/h from the East, gusting to 11 mph17 km/h
| September 18 | ||||
| 9pm | 71°F21°C | 4 mph7 km/h East | Clear | |
| 10pm | 69°F21°C | 4 mph7 km/h Northeast | Clear | |
| 11pm | 68°F20°C | 4 mph7 km/h Northeast | Clear | |
| September 19 | ||||
| 12am | 67°F19°C | 4 mph7 km/h Northeast | Clear | |
| 1am | 66°F19°C | 4 mph7 km/h Northeast | Clear | |
| 2am | 65°F18°C | 4 mph6 km/h Northeast | Clear | |
| 3am | 65°F18°C | 4 mph6 km/h East | Mostly Clear | |
| 4am | 65°F18°C | 4 mph6 km/h Northeast | Mostly Clear | |
| 5am | 65°F18°C | 4 mph6 km/h Northeast | Mostly Clear | |
| 6am | 64°F18°C | 4 mph6 km/h Northeast | Clear | |
| 7am | 64°F18°C | 4 mph6 km/h East | Mostly Clear | |
| 8am | 65°F18°C | 4 mph6 km/h East | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 58°F14°C | 84°F29°C | 3 mph4 km/h from East | Clear | Mostly Clear |
| September 19 | 64°F18°C | 82°F28°C | 5 mph8 km/h from East | Mostly Cloudy | Rain |
| September 20 | 64°F18°C | 77°F25°C | 5 mph8 km/h from South | Rain | Drizzle |
| September 21 | 64°F18°C | 77°F25°C | 7 mph11 km/h from Southwest | Drizzle | Rain |
| September 22 | 62°F17°C | 75°F24°C | 6 mph9 km/h from Southwest | Rain | Drizzle |
| September 23 | 61°F16°C | 73°F23°C | 6 mph9 km/h from East | Rain | Rain |
| September 24 | 61°F16°C | 72°F22°C | 9 mph15 km/h from Northeast | Rain | Rain |
No
Low of 64°F18°C, High of 82°F28°CWind: 5 mph8 km/h
Precipitation: 46% rain