No
you don't need a jacket based on the weather in Lake Forest, IL, USA 1 second ago
75°F24°C & Cloudy
Wind is 11 mph17 km/h from the West, gusting to 18 mph29 km/h
| July 12 | ||||
| 12pm | 76°F24°C | 10 mph16 km/h West | Partly Cloudy | |
| 1pm | 77°F25°C | 10 mph16 km/h West | Partly Cloudy | |
| 2pm | 79°F26°C | 8 mph14 km/h West | Partly Cloudy | |
| 3pm | 80°F27°C | 8 mph13 km/h West | Partly Cloudy | |
| 4pm | 82°F28°C | 9 mph15 km/h West | Mostly Clear | |
| 5pm | 82°F28°C | 9 mph15 km/h West | Mostly Clear | |
| 6pm | 83°F28°C | 9 mph14 km/h West | Mostly Clear | |
| 7pm | 82°F28°C | 10 mph16 km/h West | Mostly Clear | |
| 8pm | 80°F27°C | 9 mph15 km/h West | Mostly Clear | |
| 9pm | 78°F26°C | 8 mph12 km/h West | Clear | |
| 10pm | 75°F24°C | 7 mph11 km/h West | Mostly Clear | |
| 11pm | 73°F23°C | 6 mph9 km/h West | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 12 | 68°F20°C | 83°F28°C | 9 mph15 km/h from West | Partly Cloudy | Mostly Clear |
| July 13 | 65°F18°C | 81°F27°C | 5 mph8 km/h from West | Partly Cloudy | Clear |
| July 14 | 66°F19°C | 85°F30°C | 6 mph9 km/h from Southwest | Mostly Clear | Partly Cloudy |
| July 15 | 72°F22°C | 84°F29°C | 6 mph10 km/h from South | Partly Cloudy | Drizzle |
| July 16 | 72°F22°C | 83°F28°C | 6 mph10 km/h from East | Thunderstorms | Rain |
| July 17 | 70°F21°C | 81°F27°C | 7 mph12 km/h from West | Rain | Rain |
| July 18 | 65°F18°C | 76°F24°C | 8 mph13 km/h from North | Drizzle | Partly Cloudy |
No
Low of 65°F19°C, High of 81°F27°CWind: 5 mph8 km/h
Precipitation: None