Yes

you do need a jacket based on the weather in Ankara, Turkey 1 second ago

Why? Because it's cold. simple as that.
48°F9°C & Mostly Cloudy

Wind is 4 mph7 km/h from the SE, gusting to 5 mph8 km/h
December 2
3pm48°F9°C4 mph7 km/h SEMostly Cloudy
4pm47°F8°C4 mph7 km/h SEMostly Cloudy
5pm47°F8°C4 mph7 km/h SEPartly Cloudy
6pm46°F8°C4 mph6 km/h SEMostly Cloudy
7pm45°F7°C4 mph6 km/h SEPartly Cloudy
8pm44°F7°C3 mph5 km/h SEPartly Cloudy
9pm44°F6°C3 mph5 km/h SEMostly Cloudy
10pm43°F6°C3 mph5 km/h SECloudy
11pm42°F6°C3 mph5 km/h SEMostly Cloudy
December 3
12am42°F5°C3 mph5 km/h SEMostly Cloudy
1am44°F7°C3 mph5 km/h SECloudy
2am48°F9°C3 mph5 km/h SECloudy
DateLowHighWindDayNight
December 139°F4°C61°F16°C4 mph6 km/h from SWMostly ClearMostly Cloudy
December 242°F5°C59°F15°C3 mph5 km/h from SCloudyMostly Cloudy
December 340°F4°C57°F14°C4 mph6 km/h from SWMostly ClearMostly Clear
December 439°F4°C56°F13°C5 mph8 km/h from EMostly ClearPartly Cloudy
December 537°F3°C53°F12°C2 mph4 km/h from SMostly CloudyMostly Cloudy
December 641°F5°C52°F11°C4 mph7 km/h from SCloudyMostly Cloudy
December 740°F4°C48°F9°C6 mph10 km/h from NWDrizzleDrizzle

Yes

Low of 42°F6°C, High of 59°F15°C
Wind: 3 mph5 km/h
Precipitation: None

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