Yes

you do need a jacket based on the weather in Chicago, IL, USA 2 minutes ago

Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it!
39°F4°C & Mostly Clear

Wind is 4 mph7 km/h from the Southwest, gusting to 8 mph13 km/h
October 25
6am39°F4°C5 mph8 km/h SouthwestMostly Clear
7am40°F4°C5 mph7 km/h SouthMostly Clear
8am41°F5°C6 mph10 km/h SoutheastMostly Clear
9am41°F5°C6 mph10 km/h SoutheastMostly Clear
10am40°F4°C6 mph10 km/h SouthClear
11am39°F4°C6 mph10 km/h SouthMostly Clear
12pm40°F4°C7 mph11 km/h SouthMostly Clear
1pm41°F5°C6 mph9 km/h SouthPartly Cloudy
2pm44°F6°C5 mph8 km/h SoutheastPartly Cloudy
3pm47°F8°C5 mph8 km/h SoutheastPartly Cloudy
4pm51°F10°C6 mph9 km/h SoutheastPartly Cloudy
5pm53°F12°C6 mph10 km/h EastMostly Cloudy
DateLowHighWindDayNight
October 2539°F4°C55°F13°C6 mph10 km/h from EastMostly CloudyPartly Cloudy
October 2644°F7°C58°F15°C9 mph14 km/h from EastClearMostly Clear
October 2744°F7°C55°F13°C12 mph19 km/h from EastMostly ClearPartly Cloudy
October 2845°F7°C56°F14°C11 mph18 km/h from EastDrizzlePartly Cloudy
October 2946°F8°C53°F12°C13 mph20 km/h from NortheastRainDrizzle
October 3044°F7°C53°F12°C8 mph12 km/h from NorthwestMostly CloudyMostly Cloudy
October 3141°F5°C55°F13°C8 mph13 km/h from WestPartly CloudyPartly Cloudy

Yes

Low of 44°F7°C, High of 58°F15°C
Wind: 9 mph14 km/h
Precipitation: None

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