Yes

you do need a jacket based on the weather in Windsor, IL 61465, USA 1 second ago

Why? Because it's not very warm out and it's windy enough to give you a brand new hairdo!
54°F12°C & Mostly Clear

Wind is 12 mph20 km/h from the Northeast, gusting to 21 mph33 km/h
October 29
11pm52°F11°C11 mph17 km/h NortheastMostly Clear
October 30
12am49°F9°C9 mph15 km/h NortheastClear
1am46°F8°C8 mph13 km/h NortheastClear
2am45°F7°C8 mph13 km/h NortheastClear
3am43°F6°C8 mph12 km/h NortheastClear
4am42°F6°C7 mph12 km/h NortheastClear
5am41°F5°C7 mph11 km/h NorthClear
6am40°F5°C7 mph11 km/h NorthClear
7am40°F4°C7 mph11 km/h NorthClear
8am39°F4°C7 mph11 km/h NorthClear
9am38°F4°C7 mph12 km/h NorthClear
10am38°F3°C7 mph12 km/h NorthClear
DateLowHighWindDayNight
October 2941°F5°C57°F14°C17 mph28 km/h from NortheastWindyClear
October 3037°F3°C55°F13°C9 mph14 km/h from NorthwestPartly CloudyPartly Cloudy
October 3137°F3°C53°F12°C10 mph16 km/h from WestPartly CloudyMostly Cloudy
November 137°F3°C49°F10°C7 mph12 km/h from NorthwestMostly CloudyPartly Cloudy
November 233°F1°C52°F11°C10 mph15 km/h from SouthwestPartly CloudyMostly Clear
November 341°F5°C60°F15°C11 mph17 km/h from WestMostly ClearClear
November 436°F2°C59°F15°C5 mph9 km/h from SouthwestPartly CloudyPartly Cloudy

Yes

Low of 37°F3°C, High of 55°F13°C
Wind: 9 mph14 km/h
Precipitation: None

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