Yes

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

Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!
40°F4°C & Mostly Clear

Wind is 6 mph10 km/h from the South, gusting to 13 mph21 km/h
April 6
11pm39°F4°C6 mph10 km/h SouthClear
April 7
12am38°F4°C7 mph11 km/h SouthClear
1am38°F3°C8 mph12 km/h SouthwestClear
2am37°F3°C8 mph13 km/h SouthwestClear
3am37°F3°C9 mph15 km/h SouthwestClear
4am37°F3°C10 mph16 km/h SouthwestMostly Clear
5am38°F3°C11 mph18 km/h SouthwestClear
6am38°F3°C11 mph18 km/h SouthwestClear
7am38°F4°C11 mph17 km/h WestMostly Clear
8am39°F4°C10 mph17 km/h NorthwestPartly Cloudy
9am40°F4°C12 mph20 km/h NorthwestPartly Cloudy
10am39°F4°C14 mph22 km/h NorthwestMostly Cloudy
DateLowHighWindDayNight
April 633°F0°C50°F10°C4 mph7 km/h from EastMostly ClearClear
April 728°F-2°C40°F4°C13 mph21 km/h from NorthMostly CloudyMostly Clear
April 822°F-5°C42°F6°C5 mph8 km/h from NorthwestClearMostly Cloudy
April 931°F-1°C43°F6°C10 mph16 km/h from SoutheastRainRain
April 1036°F2°C47°F8°C6 mph10 km/h from NorthDrizzlePartly Cloudy
April 1133°F1°C49°F9°C7 mph11 km/h from NortheastMostly CloudyMostly Clear
April 1234°F1°C56°F13°C5 mph8 km/h from NortheastMostly ClearMostly Cloudy

Yes

Low of 28°F-2°C, High of 39°F4°C
Wind: 13 mph21 km/h
Precipitation: None

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