Yes

you do need a jacket based on the weather in Cedarburg, WI 53012, USA 1 second ago

Why? Because it's why-did-i-leave-my bed degrees out!
16°F-9°C & Cloudy

Wind is 11 mph17 km/h from the Southwest, gusting to 19 mph30 km/h
January 24
3pm16°F-9°C11 mph18 km/h SouthwestCloudy
4pm17°F-8°C11 mph17 km/h SouthwestCloudy
5pm17°F-9°C10 mph15 km/h SouthwestCloudy
6pm15°F-10°C7 mph12 km/h SouthCloudy
7pm14°F-10°C8 mph14 km/h SouthCloudy
8pm14°F-10°C10 mph17 km/h SouthCloudy
9pm15°F-9°C12 mph20 km/h SouthCloudy
10pm16°F-9°C13 mph21 km/h SouthCloudy
11pm17°F-9°C13 mph22 km/h SouthCloudy
January 25
12am17°F-8°C14 mph22 km/h SouthwestCloudy
1am18°F-8°C13 mph22 km/h SouthwestCloudy
2am18°F-8°C13 mph21 km/h SouthwestCloudy
DateLowHighWindDayNight
January 24-4°F-20°C18°F-8°C8 mph12 km/h from SouthwestPartly CloudyMostly Cloudy
January 2518°F-8°C33°F0°C14 mph23 km/h from WestPartly CloudyWindy
January 2612°F-11°C26°F-3°C14 mph22 km/h from WestClearWindy
January 2720°F-7°C36°F2°C21 mph34 km/h from WestWindyPartly Cloudy
January 2820°F-7°C32°F-0°C13 mph20 km/h from WestMostly CloudyMostly Cloudy
January 2915°F-10°C30°F-1°C12 mph20 km/h from NorthwestMostly CloudyMostly Clear
January 3010°F-12°C25°F-4°C10 mph15 km/h from NorthwestMostly ClearMostly Clear

Yes

Low of 18°F-8°C, High of 33°F1°C
Wind: 14 mph23 km/h
Precipitation: None

Support This Page