Yes

you do need a jacket based on the weather in Berwyn, IL 60402, USA 1 second ago

Why? Because it's fairly windy outside!
68°F20°C & Cloudy

Wind is 9 mph15 km/h from the South, gusting to 21 mph34 km/h
October 18
2am67°F20°C9 mph15 km/h SouthCloudy
3am66°F19°C10 mph16 km/h SouthCloudy
4am66°F19°C10 mph17 km/h SouthMostly Cloudy
5am65°F18°C10 mph17 km/h SouthMostly Cloudy
6am65°F18°C10 mph16 km/h SouthMostly Clear
7am64°F18°C10 mph16 km/h SouthMostly Cloudy
8am64°F18°C10 mph16 km/h SouthPartly Cloudy
9am64°F18°C10 mph16 km/h SouthwestMostly Cloudy
10am64°F18°C9 mph14 km/h SouthwestMostly Cloudy
11am64°F18°C9 mph15 km/h SouthwestDrizzle
12pm63°F17°C11 mph18 km/h SouthwestRain
1pm64°F18°C8 mph13 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
October 1757°F14°C75°F24°C6 mph10 km/h from SouthMostly CloudyRain
October 1862°F17°C73°F23°C9 mph14 km/h from SouthwestRainRain
October 1947°F8°C62°F17°C14 mph22 km/h from NorthwestRainClear
October 2043°F6°C64°F18°C10 mph15 km/h from SouthMostly ClearRain
October 2146°F8°C54°F12°C13 mph22 km/h from WestMostly CloudyMostly Cloudy
October 2243°F6°C56°F13°C9 mph15 km/h from NorthwestPartly CloudyMostly Clear
October 2342°F6°C62°F17°C6 mph9 km/h from SouthwestPartly CloudyMostly Cloudy

No

Low of 62°F17°C, High of 73°F23°C
Wind: 9 mph14 km/h
Precipitation: 65% rain

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