Yes

you do need a jacket based on the weather in Chicago, IL 60613, USA 1 second ago

Why? Because it's windy enough to give you a brand new hairdo!
67°F20°C & Cloudy

Wind is 14 mph22 km/h from the North, gusting to 25 mph40 km/h
July 6
8pm67°F19°C14 mph23 km/h NorthCloudy
9pm67°F19°C13 mph21 km/h NorthMostly Cloudy
10pm65°F19°C12 mph20 km/h NorthMostly Cloudy
11pm65°F18°C10 mph16 km/h NorthMostly Cloudy
July 7
12am65°F18°C10 mph16 km/h NorthCloudy
1am64°F18°C9 mph15 km/h NorthCloudy
2am64°F18°C11 mph18 km/h NorthCloudy
3am65°F18°C10 mph16 km/h NorthCloudy
4am65°F18°C10 mph16 km/h NorthCloudy
5am65°F18°C10 mph16 km/h NorthCloudy
6am65°F18°C10 mph16 km/h NorthCloudy
7am66°F19°C10 mph16 km/h NorthCloudy
DateLowHighWindDayNight
July 664°F18°C81°F27°C6 mph10 km/h from NorthwestThunderstormsCloudy
July 764°F18°C78°F25°C9 mph15 km/h from NorthMostly ClearMostly Clear
July 867°F19°C84°F29°C4 mph6 km/h from SoutheastPartly CloudyRain
July 971°F21°C82°F28°C5 mph8 km/h from NortheastDrizzleMostly Clear
July 1069°F21°C81°F27°C7 mph11 km/h from NortheastPartly CloudyPartly Cloudy
July 1170°F21°C88°F31°C7 mph12 km/h from SouthPartly CloudyThunderstorms
July 1272°F22°C83°F28°C7 mph11 km/h from WestMostly CloudyPartly Cloudy

No

Low of 64°F18°C, High of 78°F26°C
Wind: 9 mph15 km/h
Precipitation: None

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