Yes

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

Why? Because it's quite chilly!
39°F4°C & Mostly Clear

Wind is 1 mph2 km/h from the Northeast, gusting to 6 mph10 km/h
April 27
8am40°F5°C2 mph3 km/h EastMostly Clear
9am45°F7°C4 mph6 km/h SoutheastClear
10am49°F10°C6 mph9 km/h SoutheastMostly Clear
11am54°F12°C6 mph10 km/h SoutheastMostly Clear
12pm58°F15°C7 mph12 km/h SoutheastMostly Clear
1pm62°F17°C8 mph13 km/h SoutheastPartly Cloudy
2pm64°F18°C8 mph13 km/h SouthPartly Cloudy
3pm66°F19°C8 mph13 km/h SouthClear
4pm67°F20°C8 mph13 km/h SouthClear
5pm68°F20°C8 mph14 km/h SouthClear
6pm68°F20°C9 mph14 km/h SouthClear
7pm67°F20°C8 mph13 km/h SoutheastClear
DateLowHighWindDayNight
April 2737°F3°C68°F20°C7 mph11 km/h from SoutheastMostly ClearClear
April 2851°F10°C79°F26°C13 mph20 km/h from SouthPartly CloudyWindy
April 2951°F11°C73°F23°C14 mph22 km/h from WestMostly CloudyMostly Cloudy
April 3044°F7°C61°F16°C8 mph13 km/h from EastRainRain
May 150°F10°C65°F18°C7 mph11 km/h from WestRainRain
May 246°F8°C58°F14°C9 mph14 km/h from NorthwestPartly CloudyPartly Cloudy
May 341°F5°C59°F15°C7 mph11 km/h from NorthwestPartly CloudyMostly Clear

Yes

Low of 51°F11°C, High of 80°F27°C
Wind: 13 mph20 km/h
Precipitation: None

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