Yes

you do need a jacket based on the weather in Flint, MI 48507, USA 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
59°F15°C & Clear

Wind is 6 mph9 km/h from the South, gusting to 13 mph21 km/h
September 27
9am61°F16°C7 mph11 km/h SouthClear
10am67°F19°C9 mph14 km/h SouthwestClear
11am72°F22°C9 mph15 km/h SouthwestClear
12pm75°F24°C10 mph17 km/h SouthwestClear
1pm78°F25°C11 mph17 km/h WestClear
2pm79°F26°C10 mph15 km/h WestClear
3pm81°F27°C9 mph15 km/h WestClear
4pm81°F27°C9 mph14 km/h WestClear
5pm81°F27°C9 mph15 km/h WestClear
6pm80°F27°C8 mph13 km/h WestClear
7pm77°F25°C7 mph11 km/h WestClear
8pm73°F23°C7 mph11 km/h WestClear
DateLowHighWindDayNight
September 2755°F13°C81°F27°C9 mph14 km/h from SouthwestClearClear
September 2858°F14°C77°F25°C5 mph8 km/h from NorthClearClear
September 2953°F12°C79°F26°C3 mph5 km/h from NorthwestClearClear
September 3055°F13°C79°F26°C6 mph10 km/h from NortheastClearMostly Clear
October 154°F12°C72°F22°C9 mph14 km/h from EastMostly CloudyPartly Cloudy
October 248°F9°C72°F22°C7 mph12 km/h from SoutheastMostly ClearMostly Clear
October 350°F10°C77°F25°C6 mph9 km/h from SouthMostly ClearMostly Clear

Yes

Low of 58°F15°C, High of 77°F25°C
Wind: 5 mph8 km/h
Precipitation: None

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