Yes

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

Why? Because just cool enough for a jacket, but not warm enough to ditch it and the wind could blow a wig clean off your head!
54°F12°C & Mostly Cloudy

Wind is 12 mph19 km/h from the South, gusting to 25 mph40 km/h
September 5
6am55°F13°C14 mph22 km/h SouthwestCloudy
7am55°F13°C14 mph22 km/h SouthwestMostly Cloudy
8am56°F13°C14 mph22 km/h SouthwestMostly Clear
9am59°F15°C15 mph24 km/h SouthwestClear
10am62°F16°C16 mph26 km/h WestWindy
11am64°F18°C17 mph28 km/h WestWindy
12pm65°F18°C18 mph29 km/h WestWindy
1pm66°F19°C18 mph28 km/h WestWindy
2pm67°F19°C17 mph28 km/h WestWindy
3pm68°F20°C17 mph27 km/h WestWindy
4pm68°F20°C16 mph26 km/h WestWindy
5pm68°F20°C15 mph25 km/h WestWindy
DateLowHighWindDayNight
September 552°F11°C68°F20°C16 mph25 km/h from WestWindyMostly Cloudy
September 649°F9°C65°F18°C10 mph17 km/h from WestPartly CloudyPartly Cloudy
September 747°F8°C65°F18°C9 mph15 km/h from NorthwestMostly ClearMostly Clear
September 846°F8°C70°F21°C5 mph8 km/h from SouthMostly ClearMostly Clear
September 949°F9°C74°F23°C8 mph13 km/h from SouthPartly CloudyMostly Cloudy
September 1054°F12°C78°F25°C5 mph8 km/h from SouthwestMostly ClearPartly Cloudy
September 1156°F14°C76°F24°C7 mph10 km/h from NortheastPartly CloudyMostly Clear

Yes

Low of 49°F10°C, High of 64°F18°C
Wind: 10 mph17 km/h
Precipitation: None

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