Yes

you do need a jacket based on the weather in 64285 Darmstadt, Germany 1 second ago

Why? Because the cold's there, but it's just a reminder, not an invasion!

46°F8°C & Partly Cloudy

Wind is 6 mph10 km/h from the Southwest, gusting to 15 mph24 km/h

Date	Low	High	Wind	Day	Night
February 26	37°F3°C	46°F8°C	7 mph11 km/h from Southwest	Drizzle	Drizzle
February 27	35°F2°C	44°F7°C	4 mph7 km/h from Northwest	Mostly Cloudy	Mostly Cloudy
February 28	33°F0°C	43°F6°C	6 mph9 km/h from Northeast	Mostly Cloudy	Mostly Cloudy
March 1	32°F-0°C	46°F8°C	6 mph10 km/h from Northeast	Partly Cloudy	Mostly Clear
March 2	30°F-1°C	49°F9°C	3 mph5 km/h from Northeast	Clear	Clear
March 3	30°F-1°C	51°F10°C	2 mph3 km/h from Northwest	Mostly Clear	Mostly Clear
March 4	31°F-0°C	52°F11°C	4 mph7 km/h from Southwest	Partly Cloudy	Partly Cloudy

Low of 35°F2°C, High of 44°F7°C
Wind: 4 mph7 km/h
Precipitation: None