Yes

you do need a jacket based on the weather in Leipzig, Germany 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
50°F10°C & Mostly Cloudy

Wind is 6 mph9 km/h from the West, gusting to 11 mph18 km/h
October 17
7pm50°F10°C6 mph10 km/h WestMostly Cloudy
8pm49°F10°C7 mph11 km/h WestMostly Cloudy
9pm49°F9°C8 mph13 km/h WestMostly Cloudy
10pm48°F9°C8 mph14 km/h NorthwestMostly Cloudy
11pm47°F8°C9 mph14 km/h NorthwestMostly Cloudy
October 18
12am46°F8°C9 mph15 km/h NorthwestMostly Cloudy
1am45°F7°C8 mph14 km/h NorthwestMostly Cloudy
2am43°F6°C8 mph12 km/h NorthwestMostly Clear
3am42°F6°C7 mph12 km/h NorthwestMostly Clear
4am41°F5°C7 mph11 km/h NorthwestMostly Clear
5am40°F5°C6 mph10 km/h NorthwestMostly Clear
6am40°F4°C5 mph9 km/h NorthwestMostly Clear
DateLowHighWindDayNight
October 1648°F9°C57°F14°C7 mph12 km/h from WestMostly CloudyMostly Cloudy
October 1738°F4°C52°F11°C4 mph7 km/h from NorthMostly ClearMostly Clear
October 1835°F2°C53°F12°C6 mph9 km/h from SoutheastMostly CloudyMostly Cloudy
October 1943°F6°C59°F15°C8 mph14 km/h from SouthCloudyMostly Cloudy
October 2049°F10°C61°F16°C11 mph18 km/h from SouthwestMostly CloudyMostly Cloudy
October 2149°F10°C59°F15°C10 mph16 km/h from SouthwestMostly CloudyPartly Cloudy
October 2248°F9°C60°F16°C12 mph19 km/h from SouthDrizzleDrizzle

Yes

Low of 38°F4°C, High of 52°F11°C
Wind: 4 mph7 km/h
Precipitation: None

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