Yes

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

Why? Because it's really really huffing out there!
70°F21°C & Windy

Wind is 21 mph34 km/h from the West, gusting to 36 mph58 km/h
April 29
7pm66°F19°C19 mph31 km/h NorthwestWindy
8pm62°F17°C16 mph26 km/h NorthwestWindy
9pm58°F14°C14 mph22 km/h NorthwestMostly Clear
10pm55°F13°C12 mph20 km/h NorthwestMostly Clear
11pm52°F11°C10 mph16 km/h NorthClear
April 30
12am49°F9°C8 mph14 km/h NorthClear
1am46°F8°C9 mph15 km/h NorthClear
2am43°F6°C9 mph14 km/h NorthClear
3am41°F5°C7 mph12 km/h NorthMostly Clear
4am39°F4°C7 mph11 km/h NorthMostly Clear
5am38°F3°C6 mph10 km/h NorthPartly Cloudy
6am37°F3°C5 mph8 km/h NorthPartly Cloudy
DateLowHighWindDayNight
April 2949°F9°C83°F28°C13 mph21 km/h from WestPartly CloudyMostly Clear
April 3037°F3°C63°F17°C5 mph9 km/h from EastPartly CloudyDrizzle
May 146°F8°C69°F21°C11 mph18 km/h from SouthRainRain
May 251°F11°C63°F17°C14 mph22 km/h from WestMostly CloudyRain
May 346°F8°C59°F15°C10 mph16 km/h from NorthDrizzleMostly Clear
May 439°F4°C65°F18°C10 mph17 km/h from NortheastMostly ClearPartly Cloudy
May 546°F8°C65°F18°C8 mph13 km/h from EastPartly CloudyPartly Cloudy

Yes

Low of 37°F3°C, High of 64°F18°C
Wind: 5 mph9 km/h
Precipitation: None

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