No
you don't need a jacket based on the weather in Vernon Hills, IL, USA 1 second ago
79°F26°C & Clear
Wind is 7 mph11 km/h from the East, gusting to 10 mph16 km/h
| September 15 | ||||
| 7pm | 76°F25°C | 6 mph10 km/h East | Clear | |
| 8pm | 72°F22°C | 4 mph6 km/h Northeast | Clear | |
| 9pm | 69°F21°C | 4 mph6 km/h Northeast | Clear | |
| 10pm | 68°F20°C | 4 mph7 km/h North | Clear | |
| 11pm | 67°F19°C | 4 mph7 km/h Northeast | Clear | |
| September 16 | ||||
| 12am | 66°F19°C | 4 mph6 km/h Northeast | Clear | |
| 1am | 66°F19°C | 4 mph6 km/h Northeast | Clear | |
| 2am | 65°F18°C | 4 mph6 km/h Northeast | Clear | |
| 3am | 64°F18°C | 4 mph6 km/h Northeast | Clear | |
| 4am | 64°F18°C | 3 mph5 km/h East | Clear | |
| 5am | 63°F17°C | 3 mph5 km/h East | Clear | |
| 6am | 62°F17°C | 3 mph4 km/h Southeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 15 | 60°F16°C | 81°F27°C | 4 mph7 km/h from East | Clear | Clear |
| September 16 | 61°F16°C | 81°F27°C | 5 mph8 km/h from East | Clear | Clear |
| September 17 | 61°F16°C | 81°F27°C | 4 mph7 km/h from Northeast | Mostly Clear | Mostly Clear |
| September 18 | 62°F17°C | 82°F28°C | 5 mph8 km/h from East | Mostly Clear | Partly Cloudy |
| September 19 | 64°F18°C | 80°F26°C | 7 mph11 km/h from East | Partly Cloudy | Mostly Cloudy |
| September 20 | 64°F18°C | 79°F26°C | 7 mph12 km/h from Southeast | Mostly Cloudy | Partly Cloudy |
| September 21 | 65°F18°C | 80°F27°C | 10 mph16 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
No
Low of 62°F17°C, High of 81°F27°CWind: 5 mph8 km/h
Precipitation: None