Yes

you do need a jacket based on the weather in South Bend, IN, USA 1 second ago

Why? Because a little drizzle out!
60°F16°C & Drizzle

Wind is 4 mph7 km/h from the North, gusting to 12 mph19 km/h
June 5
3am60°F16°C4 mph7 km/h NortheastRain
4am61°F16°C3 mph5 km/h NortheastRain
5am61°F16°C4 mph6 km/h NorthRain
6am61°F16°C4 mph6 km/h NorthRain
7am61°F16°C5 mph9 km/h NortheastDrizzle
8am62°F17°C8 mph13 km/h NorthDrizzle
9am63°F17°C8 mph13 km/h NortheastCloudy
10am64°F18°C9 mph15 km/h NortheastCloudy
11am66°F19°C10 mph15 km/h NortheastCloudy
12pm68°F20°C10 mph16 km/h NortheastMostly Cloudy
1pm70°F21°C10 mph17 km/h NortheastMostly Cloudy
2pm72°F22°C10 mph16 km/h NortheastMostly Cloudy
DateLowHighWindDayNight
June 560°F15°C74°F23°C9 mph15 km/h from NortheastDrizzleMostly Cloudy
June 659°F15°C76°F24°C5 mph8 km/h from NortheastMostly CloudyMostly Clear
June 757°F14°C76°F24°C6 mph9 km/h from EastMostly CloudyRain
June 859°F15°C76°F24°C7 mph11 km/h from SouthRainDrizzle
June 958°F14°C76°F24°C9 mph15 km/h from SouthwestMostly ClearPartly Cloudy
June 1057°F14°C73°F23°C7 mph12 km/h from NorthwestMostly ClearClear
June 1156°F14°C81°F27°C4 mph7 km/h from WestMostly ClearClear

No

Low of 59°F15°C, High of 76°F25°C
Wind: 5 mph8 km/h
Precipitation: 12% rain

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