Yes

you do need a jacket based on the weather in Luxembourg 1 second ago

Why? Because it's pretty chilly.
50°F10°C & Mostly Cloudy

Wind is 8 mph13 km/h from the N, gusting to 17 mph28 km/h
April 18
10am50°F10°C9 mph14 km/h NMostly Cloudy
11am51°F11°C8 mph14 km/h NPartly Cloudy
12pm50°F10°C8 mph13 km/h NWPartly Cloudy
1pm49°F9°C7 mph12 km/h NWMostly Cloudy
2pm46°F8°C6 mph10 km/h NWMostly Cloudy
3pm42°F6°C5 mph7 km/h NWMostly Cloudy
4pm40°F4°C4 mph6 km/h WMostly Cloudy
5pm39°F4°C4 mph6 km/h WCloudy
6pm39°F4°C4 mph6 km/h SWCloudy
7pm38°F3°C4 mph7 km/h SWCloudy
8pm39°F4°C5 mph9 km/h SWCloudy
9pm39°F4°C7 mph12 km/h SWCloudy
DateLowHighWindDayNight
April 1735°F2°C51°F11°C8 mph12 km/h from NMostly CloudyCloudy
April 1838°F3°C49°F9°C14 mph23 km/h from WRainMostly Cloudy
April 1937°F3°C49°F10°C11 mph17 km/h from NWMostly CloudyMostly Cloudy
April 2034°F1°C47°F8°C10 mph16 km/h from NEMostly CloudyMostly Cloudy
April 2132°F-0°C46°F8°C10 mph16 km/h from NEMostly CloudyPartly Cloudy
April 2231°F-0°C49°F10°C11 mph18 km/h from NEMostly CloudyPartly Cloudy
April 2333°F1°C50°F10°C9 mph15 km/h from NPartly CloudyMostly Cloudy

Yes

Low of 38°F4°C, High of 49°F10°C
Wind: 14 mph23 km/h
Precipitation: 72% rain

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