Yes

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

Why? Because you're not freezing, but you’ll definitely start complaining if it lasts much longer!
36°F2°C & Mostly Cloudy

Wind is 4 mph6 km/h from the Southwest, gusting to 9 mph14 km/h
November 4
1pm36°F2°C4 mph7 km/h SouthwestMostly Cloudy
2pm40°F5°C3 mph5 km/h SouthMostly Cloudy
3pm46°F8°C5 mph7 km/h SouthPartly Cloudy
4pm52°F11°C7 mph11 km/h SouthPartly Cloudy
5pm57°F14°C9 mph15 km/h SouthMostly Clear
6pm60°F15°C11 mph18 km/h SouthMostly Clear
7pm61°F16°C12 mph20 km/h SouthMostly Clear
8pm62°F17°C13 mph21 km/h SouthMostly Clear
9pm62°F17°C13 mph21 km/h SouthClear
10pm61°F16°C12 mph19 km/h SouthClear
11pm57°F14°C9 mph15 km/h SoutheastClear
November 5
12am54°F12°C9 mph14 km/h SoutheastClear
DateLowHighWindDayNight
November 435°F2°C62°F17°C9 mph15 km/h from SouthMostly ClearMostly Clear
November 536°F2°C57°F14°C15 mph23 km/h from NorthwestClearMostly Clear
November 631°F-1°C54°F12°C11 mph17 km/h from SouthMostly CloudyRain
November 742°F5°C58°F14°C13 mph22 km/h from WestPartly CloudyPartly Cloudy
November 836°F2°C47°F9°C6 mph10 km/h from EastRainRain
November 924°F-5°C36°F2°C15 mph25 km/h from NorthwestWindyClear
November 1021°F-6°C37°F3°C9 mph15 km/h from NorthwestMostly ClearPartly Cloudy

Yes

Low of 37°F3°C, High of 57°F14°C
Wind: 15 mph23 km/h
Precipitation: None

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