Yes

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

Why? Because it's not very warm out.
57°F14°C & Clear

Wind is 7 mph12 km/h from the SE, gusting to 18 mph29 km/h
September 24
6pm57°F14°C8 mph13 km/h SEClear
7pm56°F13°C8 mph13 km/h SEMostly Clear
8pm55°F13°C9 mph14 km/h SEMostly Clear
9pm55°F13°C9 mph14 km/h SEPartly Cloudy
10pm55°F13°C9 mph14 km/h SEMostly Cloudy
11pm54°F12°C9 mph14 km/h SEMostly Cloudy
September 25
12am54°F12°C9 mph14 km/h SEMostly Cloudy
1am53°F12°C9 mph14 km/h SEMostly Cloudy
2am54°F12°C9 mph14 km/h SEMostly Cloudy
3am56°F13°C9 mph14 km/h SEMostly Cloudy
4am59°F15°C9 mph15 km/h SEMostly Cloudy
5am61°F16°C10 mph16 km/h SEMostly Cloudy
DateLowHighWindDayNight
September 2348°F9°C69°F20°C8 mph13 km/h from SMostly ClearMostly Clear
September 2453°F12°C71°F22°C7 mph12 km/h from SEMostly CloudyMostly Clear
September 2553°F11°C74°F23°C6 mph9 km/h from SEPartly CloudyPartly Cloudy
September 2655°F13°C75°F24°C5 mph8 km/h from SEMostly CloudyMostly Cloudy
September 2760°F16°C70°F21°C7 mph12 km/h from SWMostly CloudyMostly Cloudy
September 2857°F14°C69°F21°C6 mph9 km/h from SWPartly CloudyPartly Cloudy
September 2953°F12°C67°F19°C3 mph5 km/h from NPartly CloudyPartly Cloudy

Yes

Low of 54°F12°C, High of 71°F22°C
Wind: 7 mph12 km/h
Precipitation: None

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