Yes

you do need a jacket based on the weather in 330 W Nine Mile Rd, Ferndale, MI 48220, USA 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
50°F10°C & Clear

Wind is 4 mph7 km/h from the Northwest, gusting to 11 mph18 km/h
August 27
7am50°F10°C5 mph8 km/h NorthwestClear
8am52°F11°C5 mph7 km/h NorthwestClear
9am56°F14°C5 mph8 km/h NorthwestClear
10am61°F16°C6 mph10 km/h NorthwestClear
11am65°F18°C6 mph10 km/h NorthwestClear
12pm68°F20°C7 mph12 km/h NorthwestMostly Clear
1pm70°F21°C8 mph13 km/h NorthwestMostly Clear
2pm72°F22°C8 mph13 km/h WestPartly Cloudy
3pm73°F23°C8 mph13 km/h WestMostly Cloudy
4pm74°F23°C8 mph13 km/h WestMostly Cloudy
5pm73°F23°C8 mph13 km/h WestMostly Cloudy
6pm73°F23°C8 mph13 km/h WestCloudy
DateLowHighWindDayNight
August 2750°F10°C74°F23°C7 mph11 km/h from WestPartly CloudyPartly Cloudy
August 2857°F14°C70°F21°C9 mph14 km/h from WestRainMostly Clear
August 2951°F11°C67°F19°C6 mph10 km/h from NorthPartly CloudyMostly Clear
August 3052°F11°C72°F22°C3 mph5 km/h from NorthClearMostly Clear
August 3152°F11°C74°F23°C4 mph6 km/h from EastClearMostly Clear
September 155°F13°C76°F24°C5 mph8 km/h from EastMostly ClearMostly Clear
September 259°F15°C77°F25°C5 mph8 km/h from SoutheastMostly ClearPartly Cloudy

Yes

Low of 57°F14°C, High of 70°F21°C
Wind: 9 mph14 km/h
Precipitation: 60% rain

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