Yes

you do need a jacket based on the weather in Ann Arbor, MI, USA 1 second ago

Why? Because rain's coming down and it's cold enough that makes you wish you had a hat, but you're still too proud to admit it and the wind could blow a wig clean off your head!
35°F2°C & Rain

Wind is 11 mph17 km/h from the North, gusting to 22 mph35 km/h
November 9
4pm35°F2°C11 mph18 km/h NorthSnow
5pm36°F2°C11 mph18 km/h NorthSnow
6pm37°F3°C11 mph17 km/h NorthSnow
7pm37°F3°C11 mph18 km/h NorthSnow
8pm37°F3°C10 mph16 km/h NorthSnow
9pm37°F3°C10 mph17 km/h NorthCloudy
10pm36°F2°C10 mph15 km/h NorthCloudy
11pm35°F2°C9 mph14 km/h NorthCloudy
November 10
12am34°F1°C9 mph15 km/h NorthCloudy
1am33°F1°C10 mph15 km/h NorthCloudy
2am33°F0°C10 mph16 km/h NorthCloudy
3am32°F0°C9 mph15 km/h NorthCloudy
DateLowHighWindDayNight
November 931°F-0°C37°F3°C9 mph15 km/h from NorthSnowSnow
November 1025°F-4°C34°F1°C12 mph19 km/h from NorthwestPartly CloudyPartly Cloudy
November 1124°F-4°C37°F3°C13 mph22 km/h from SouthwestCloudyMostly Cloudy
November 1234°F1°C47°F8°C15 mph24 km/h from WestMostly CloudyPartly Cloudy
November 1333°F1°C50°F10°C10 mph16 km/h from WestPartly CloudyMostly Cloudy
November 1436°F2°C50°F10°C6 mph10 km/h from NorthPartly CloudyPartly Cloudy
November 1533°F1°C50°F10°C9 mph15 km/h from SoutheastCloudyMostly Cloudy

Yes

Low of 26°F-4°C, High of 34°F1°C
Wind: 12 mph19 km/h
Precipitation: None

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