Yes

you do need a jacket based on the weather in Brussels, Belgium 1 second ago

Why? Because there's a refreshing nip in the air.
42°F6°C & Mostly Cloudy

Wind is 8 mph13 km/h from the SW, gusting to 16 mph25 km/h
April 25
4am44°F6°C9 mph15 km/h SWMostly Cloudy
5am45°F7°C10 mph16 km/h SWMostly Cloudy
6am47°F8°C10 mph17 km/h SWCloudy
7am48°F9°C11 mph17 km/h SWCloudy
8am49°F10°C12 mph19 km/h SWCloudy
9am51°F11°C12 mph19 km/h SWCloudy
10am52°F11°C12 mph19 km/h SWCloudy
11am51°F11°C12 mph19 km/h SWCloudy
12pm50°F10°C10 mph17 km/h SWCloudy
1pm49°F10°C9 mph14 km/h SWCloudy
2pm49°F9°C8 mph13 km/h SWCloudy
3pm47°F9°C8 mph13 km/h SWCloudy
DateLowHighWindDayNight
April 2437°F3°C52°F11°C10 mph16 km/h from SWCloudyCloudy
April 2542°F6°C56°F13°C7 mph11 km/h from SWDrizzleDrizzle
April 2645°F7°C63°F17°C9 mph15 km/h from SRainDrizzle
April 2751°F11°C62°F17°C17 mph27 km/h from SWWindyMostly Cloudy
April 2845°F7°C63°F17°C5 mph8 km/h from SEMostly CloudyCloudy
April 2952°F11°C70°F21°C6 mph10 km/h from SEMostly CloudyDrizzle
April 3053°F12°C71°F22°C6 mph9 km/h from NEMostly CloudyThunderstorms

Yes

Low of 42°F6°C, High of 56°F14°C
Wind: 7 mph11 km/h
Precipitation: 38% rain

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