Yes

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

Why? Because just cool enough for a jacket, but not warm enough to ditch it and the wind is harsh and biting!
55°F13°C & Clear

Wind is 8 mph13 km/h from the South, gusting to 19 mph31 km/h
November 5
1am55°F13°C9 mph14 km/h SouthClear
2am54°F12°C9 mph14 km/h SouthPartly Cloudy
3am54°F12°C9 mph15 km/h SouthClear
4am54°F12°C11 mph17 km/h SouthClear
5am54°F12°C11 mph17 km/h SouthMostly Clear
6am54°F12°C12 mph19 km/h SouthwestMostly Clear
7am54°F12°C12 mph20 km/h SouthwestClear
8am54°F12°C12 mph20 km/h SouthwestMostly Clear
9am53°F12°C12 mph19 km/h SouthwestMostly Clear
10am53°F12°C11 mph18 km/h SouthwestMostly Clear
11am52°F11°C10 mph16 km/h SouthwestPartly Cloudy
12pm52°F11°C10 mph16 km/h WestMostly Cloudy
DateLowHighWindDayNight
November 439°F4°C62°F17°C6 mph9 km/h from SouthMostly ClearMostly Clear
November 540°F5°C58°F15°C12 mph20 km/h from NorthwestMostly ClearMostly Clear
November 634°F1°C55°F13°C6 mph10 km/h from SouthMostly CloudyRain
November 745°F7°C61°F16°C11 mph18 km/h from WestDrizzlePartly Cloudy
November 838°F4°C49°F9°C5 mph7 km/h from NortheastRainRain
November 926°F-4°C40°F4°C14 mph23 km/h from NorthwestMostly CloudyPartly Cloudy
November 1024°F-4°C36°F2°C11 mph18 km/h from NorthwestMostly ClearMostly Clear

Yes

Low of 40°F5°C, High of 58°F15°C
Wind: 12 mph20 km/h
Precipitation: None

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