Yes
you do need a jacket based on the weather in Lake Forest, IL, USA 1 second ago
Why? Because it's FREEZING out there!
29°F-2°C & Mostly Cloudy
Wind is 7 mph11 km/h from the West, gusting to 10 mph16 km/h
| January 11 | ||||
| 1pm | 30°F-1°C | 7 mph11 km/h West | Mostly Cloudy | |
| 2pm | 30°F-1°C | 7 mph11 km/h Southwest | Mostly Cloudy | |
| 3pm | 31°F-1°C | 7 mph11 km/h Southwest | Cloudy | |
| 4pm | 31°F-1°C | 6 mph10 km/h Southwest | Cloudy | |
| 5pm | 30°F-1°C | 6 mph10 km/h Southwest | Partly Cloudy | |
| 6pm | 28°F-2°C | 6 mph9 km/h Southwest | Mostly Cloudy | |
| 7pm | 27°F-3°C | 7 mph11 km/h South | Mostly Cloudy | |
| 8pm | 27°F-3°C | 7 mph12 km/h South | Mostly Cloudy | |
| 9pm | 26°F-3°C | 8 mph13 km/h South | Cloudy | |
| 10pm | 26°F-4°C | 9 mph14 km/h South | Cloudy | |
| 11pm | 25°F-4°C | 9 mph15 km/h South | Cloudy | |
| January 12 | ||||
| 12am | 26°F-4°C | 9 mph15 km/h South | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| January 11 | 25°F-4°C | 31°F-1°C | 6 mph10 km/h from Southwest | Mostly Cloudy | Snow |
| January 12 | 21°F-6°C | 34°F1°C | 13 mph21 km/h from Southwest | Cloudy | Partly Cloudy |
| January 13 | 10°F-12°C | 21°F-6°C | 15 mph24 km/h from West | Clear | Mostly Clear |
| January 14 | 6°F-15°C | 17°F-9°C | 12 mph20 km/h from West | Clear | Clear |
| January 15 | 7°F-14°C | 22°F-5°C | 8 mph13 km/h from West | Mostly Clear | Mostly Cloudy |
| January 16 | 18°F-8°C | 37°F3°C | 11 mph18 km/h from West | Partly Cloudy | Mostly Cloudy |
| January 17 | 29°F-2°C | 39°F4°C | 14 mph22 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 21°F-6°C, High of 34°F1°CWind: 13 mph21 km/h
Precipitation: None