Yes

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

Why? Because it's fairly windy outside!
88°F31°C & Mostly Clear

Wind is 14 mph23 km/h from the Southwest, gusting to 23 mph37 km/h
July 5
7pm88°F31°C15 mph24 km/h SouthwestMostly Clear
8pm86°F30°C13 mph22 km/h SouthwestMostly Clear
9pm84°F29°C11 mph18 km/h SouthwestMostly Clear
10pm81°F27°C9 mph15 km/h SouthwestMostly Clear
11pm78°F25°C10 mph16 km/h SouthwestThunderstorms
July 6
12am77°F25°C9 mph15 km/h SouthwestCloudy
1am76°F24°C8 mph13 km/h SouthwestMostly Cloudy
2am75°F24°C8 mph12 km/h SouthwestCloudy
3am74°F23°C7 mph12 km/h SouthwestMostly Cloudy
4am73°F23°C7 mph12 km/h SouthwestMostly Cloudy
5am73°F23°C8 mph13 km/h SouthwestMostly Cloudy
6am72°F22°C8 mph14 km/h SouthwestMostly Cloudy
DateLowHighWindDayNight
July 572°F22°C90°F32°C8 mph14 km/h from SouthwestMostly ClearThunderstorms
July 665°F18°C80°F27°C8 mph13 km/h from NorthwestRainPartly Cloudy
July 761°F16°C80°F27°C7 mph11 km/h from NortheastPartly CloudyMostly Clear
July 863°F17°C84°F29°C6 mph9 km/h from SouthwestPartly CloudyRain
July 967°F20°C81°F27°C5 mph8 km/h from NorthwestRainPartly Cloudy
July 1066°F19°C82°F28°C4 mph7 km/h from EastPartly CloudyPartly Cloudy
July 1165°F18°C84°F29°C5 mph9 km/h from SoutheastMostly CloudyThunderstorms

No

Low of 65°F19°C, High of 80°F27°C
Wind: 8 mph13 km/h
Precipitation: 65% rain

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