Yes

you do need a jacket based on the weather in Atlanta, GA 30318, USA 1 second ago

Why? Because it's pretty chilly!
54°F12°C & Clear

Wind is 6 mph9 km/h from the Northeast, gusting to 14 mph22 km/h
October 11
7am54°F12°C6 mph10 km/h NortheastClear
8am53°F12°C6 mph9 km/h NortheastClear
9am57°F14°C7 mph12 km/h NortheastClear
10am62°F17°C7 mph12 km/h NortheastClear
11am66°F19°C8 mph12 km/h NortheastClear
12pm69°F21°C8 mph13 km/h NorthPartly Cloudy
1pm72°F22°C8 mph13 km/h NortheastPartly Cloudy
2pm74°F23°C7 mph12 km/h NortheastMostly Clear
3pm75°F24°C7 mph12 km/h NortheastMostly Clear
4pm76°F24°C7 mph11 km/h NortheastClear
5pm76°F24°C7 mph11 km/h NortheastMostly Clear
6pm74°F23°C6 mph10 km/h NortheastMostly Clear
DateLowHighWindDayNight
October 1153°F12°C76°F24°C7 mph11 km/h from NortheastMostly ClearPartly Cloudy
October 1255°F13°C77°F25°C4 mph7 km/h from NorthwestPartly CloudyMostly Clear
October 1356°F13°C78°F25°C5 mph7 km/h from NorthClearClear
October 1457°F14°C80°F26°C4 mph7 km/h from NorthClearClear
October 1558°F14°C80°F26°C4 mph6 km/h from NorthClearClear
October 1658°F15°C80°F26°C4 mph6 km/h from NortheastClearClear
October 1760°F15°C79°F26°C5 mph8 km/h from SoutheastMostly ClearMostly Cloudy

Yes

Low of 55°F13°C, High of 77°F25°C
Wind: 4 mph7 km/h
Precipitation: None

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