Yes

you do need a jacket based on the weather in Euston, Euston Rd., London NW1 2RT, UK 1 second ago

Why? Because it's bitterly cold.
50°F10°C & Cloudy

Wind is 7 mph12 km/h from the E, gusting to 17 mph28 km/h
April 27
7am50°F10°C8 mph13 km/h ECloudy
8am53°F12°C7 mph12 km/h ECloudy
9am55°F13°C7 mph12 km/h ECloudy
10am57°F14°C8 mph12 km/h ECloudy
11am57°F14°C8 mph13 km/h ECloudy
12pm56°F14°C8 mph13 km/h EDrizzle
1pm54°F12°C8 mph14 km/h ERain
2pm52°F11°C9 mph15 km/h NERain
3pm51°F10°C10 mph16 km/h NERain
4pm49°F10°C11 mph17 km/h NERain
5pm49°F9°C11 mph18 km/h NERain
6pm48°F9°C11 mph17 km/h NEDrizzle
DateLowHighWindDayNight
April 2642°F5°C57°F14°C8 mph13 km/h from ERainRain
April 2745°F7°C53°F12°C9 mph15 km/h from SWDrizzleMostly Clear
April 2842°F6°C61°F16°C11 mph18 km/h from SPartly CloudyMostly Clear
April 2946°F8°C65°F18°C9 mph15 km/h from SPartly CloudyMostly Cloudy
April 3050°F10°C67°F20°C5 mph8 km/h from SEMostly CloudyDrizzle
May 150°F10°C62°F17°C7 mph12 km/h from NWDrizzleMostly Cloudy
May 250°F10°C69°F21°C7 mph12 km/h from NMostly CloudyPartly Cloudy

Yes

Low of 46°F8°C, High of 53°F12°C
Wind: 9 mph15 km/h
Precipitation: 70% rain

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