No

you don't need a jacket based on the weather in Chicago, IL 60654, USA 1 second ago

73°F23°C & Partly Cloudy

Wind is 6 mph9 km/h from the West, gusting to 12 mph20 km/h
July 13
2am72°F22°C6 mph9 km/h WestClear
3am71°F22°C6 mph9 km/h WestMostly Clear
4am70°F21°C5 mph8 km/h WestPartly Cloudy
5am69°F20°C5 mph8 km/h WestMostly Cloudy
6am68°F20°C5 mph8 km/h NorthwestMostly Cloudy
7am67°F20°C5 mph9 km/h NorthwestMostly Clear
8am70°F21°C4 mph7 km/h NorthwestPartly Cloudy
9am72°F22°C4 mph6 km/h NorthwestMostly Cloudy
10am74°F23°C3 mph5 km/h NorthwestMostly Cloudy
11am77°F25°C2 mph4 km/h WestMostly Cloudy
12pm78°F26°C2 mph3 km/h WestCloudy
1pm80°F27°C3 mph4 km/h WestMostly Cloudy
DateLowHighWindDayNight
July 1367°F20°C84°F29°C3 mph5 km/h from WestMostly CloudyMostly Clear
July 1468°F20°C87°F30°C3 mph6 km/h from EastClearMostly Clear
July 1572°F22°C88°F31°C5 mph9 km/h from SoutheastPartly CloudyDrizzle
July 1673°F23°C91°F33°C7 mph12 km/h from SouthwestRainThunderstorms
July 1770°F21°C81°F27°C8 mph13 km/h from NorthThunderstormsDrizzle
July 1866°F19°C78°F25°C5 mph9 km/h from NortheastPartly CloudyPartly Cloudy
July 1967°F20°C82°F28°C6 mph9 km/h from SouthwestMostly CloudyMostly Cloudy

No

Low of 68°F20°C, High of 87°F31°C
Wind: 3 mph6 km/h
Precipitation: None

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