Yes

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

Why? Because too cold for just a hoodie, too warm for a parka!
42°F6°C & Cloudy

Wind is 3 mph5 km/h from the West, gusting to 7 mph11 km/h
November 1
2am42°F6°C3 mph5 km/h WestCloudy
3am42°F6°C3 mph5 km/h SouthwestMostly Cloudy
4am41°F5°C2 mph4 km/h SouthwestRain
5am41°F5°C2 mph4 km/h SouthwestMostly Cloudy
6am40°F5°C4 mph7 km/h SouthwestMostly Cloudy
7am40°F4°C2 mph4 km/h WestMostly Cloudy
8am39°F4°C2 mph3 km/h NorthMostly Cloudy
9am38°F3°C2 mph4 km/h SouthwestMostly Cloudy
10am39°F4°C2 mph2 km/h SoutheastMostly Cloudy
11am39°F4°C2 mph3 km/h NortheastMostly Cloudy
12pm39°F4°C2 mph3 km/h NortheastMostly Cloudy
1pm39°F4°C3 mph5 km/h EastCloudy
DateLowHighWindDayNight
October 3137°F3°C52°F11°C6 mph10 km/h from NorthwestPartly CloudyRain
November 138°F3°C48°F9°C3 mph5 km/h from SoutheastDrizzlePartly Cloudy
November 235°F2°C53°F12°C7 mph12 km/h from SouthwestPartly CloudyDrizzle
November 343°F6°C53°F12°C14 mph23 km/h from WestDrizzleMostly Clear
November 438°F4°C56°F13°C7 mph12 km/h from WestPartly CloudyMostly Cloudy
November 541°F5°C57°F14°C11 mph18 km/h from SouthwestPartly CloudyMostly Clear
November 637°F3°C53°F12°C5 mph8 km/h from SouthMostly CloudyCloudy

Yes

Low of 38°F4°C, High of 48°F9°C
Wind: 3 mph5 km/h
Precipitation: 40% rain

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