Yes

you do need a jacket based on the weather in M-40, Jones, MI, USA 1 second ago

Why? Because it's not very warm out.
51°F10°C & Clear

Wind is 4 mph7 km/h from the E, gusting to 6 mph10 km/h
April 25
9pm49°F9°C5 mph8 km/h EClear
10pm46°F8°C5 mph9 km/h EClear
11pm43°F6°C6 mph10 km/h SEClear
April 26
12am42°F5°C8 mph12 km/h SEClear
1am40°F4°C8 mph13 km/h SEClear
2am38°F3°C8 mph13 km/h SEClear
3am37°F3°C8 mph13 km/h SEClear
4am36°F2°C8 mph13 km/h EMostly Clear
5am35°F2°C9 mph14 km/h EMostly Clear
6am35°F1°C9 mph15 km/h EMostly Clear
7am35°F2°C9 mph15 km/h EMostly Clear
8am38°F3°C10 mph17 km/h SEMostly Clear
DateLowHighWindDayNight
April 2529°F-1°C57°F14°C4 mph6 km/h from EMostly ClearClear
April 2635°F1°C64°F18°C14 mph22 km/h from SEMostly CloudyRain
April 2758°F14°C76°F24°C18 mph29 km/h from SWDrizzleMostly Cloudy
April 2862°F17°C79°F26°C13 mph21 km/h from SWDrizzlePartly Cloudy
April 2963°F17°C73°F23°C15 mph25 km/h from SDrizzleCloudy
April 3056°F14°C71°F22°C7 mph12 km/h from WPartly CloudyDrizzle
May 155°F13°C72°F22°C11 mph18 km/h from WPartly CloudyMostly Clear

Yes

Low of 35°F2°C, High of 64°F18°C
Wind: 14 mph22 km/h
Precipitation: 16% rain

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