Yes

you do need a jacket based on the weather in Vernon Hills, IL, USA 1 second ago

Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it!
46°F8°C & Mostly Cloudy

Wind is 7 mph12 km/h from the Northwest, gusting to 12 mph19 km/h
November 1
4pm46°F8°C8 mph12 km/h NorthwestMostly Clear
5pm47°F9°C8 mph12 km/h WestMostly Clear
6pm48°F9°C7 mph12 km/h NorthwestPartly Cloudy
7pm49°F9°C7 mph11 km/h NorthwestPartly Cloudy
8pm49°F9°C7 mph10 km/h NorthwestMostly Cloudy
9pm48°F9°C6 mph10 km/h NorthwestMostly Cloudy
10pm46°F8°C7 mph11 km/h NorthCloudy
11pm44°F7°C6 mph10 km/h NorthDrizzle
November 2
12am43°F6°C5 mph9 km/h NorthwestDrizzle
1am43°F6°C6 mph9 km/h NorthwestMostly Cloudy
2am42°F6°C6 mph9 km/h NorthwestMostly Cloudy
3am41°F5°C5 mph8 km/h NorthwestPartly Cloudy
DateLowHighWindDayNight
November 139°F4°C49°F9°C6 mph10 km/h from NorthwestDrizzleDrizzle
November 236°F2°C53°F12°C8 mph12 km/h from SouthwestPartly CloudyMostly Cloudy
November 341°F5°C58°F14°C10 mph16 km/h from WestClearPartly Cloudy
November 438°F4°C58°F14°C7 mph11 km/h from SouthPartly CloudyMostly Cloudy
November 541°F5°C56°F13°C9 mph14 km/h from NorthMostly ClearPartly Cloudy
November 638°F3°C55°F13°C9 mph15 km/h from SoutheastMostly CloudyRain
November 748°F9°C58°F14°C13 mph21 km/h from WestRainMostly Cloudy

Yes

Low of 36°F2°C, High of 53°F12°C
Wind: 8 mph12 km/h
Precipitation: None

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