Yes

you do need a jacket based on the weather in Croydon, UK 1 second ago

Why? Because there's a refreshing nip in the air.
45°F7°C & Drizzle

Wind is 8 mph13 km/h from the E, gusting to 16 mph26 km/h
April 26
9pm44°F7°C9 mph14 km/h NERain
10pm44°F6°C10 mph16 km/h NERain
11pm43°F6°C10 mph16 km/h NERain
April 27
12am43°F6°C10 mph16 km/h NEDrizzle
1am43°F6°C10 mph16 km/h NEDrizzle
2am44°F6°C9 mph15 km/h NECloudy
3am44°F7°C9 mph15 km/h NECloudy
4am46°F8°C9 mph14 km/h NECloudy
5am48°F9°C8 mph13 km/h ECloudy
6am50°F10°C7 mph11 km/h ECloudy
7am53°F12°C6 mph10 km/h ECloudy
8am55°F13°C6 mph9 km/h SECloudy
DateLowHighWindDayNight
April 2643°F6°C57°F14°C7 mph11 km/h from EDrizzleRain
April 2744°F7°C53°F12°C12 mph19 km/h from WDrizzleMostly Clear
April 2840°F5°C59°F15°C10 mph16 km/h from SPartly CloudyMostly Clear
April 2946°F8°C63°F17°C10 mph15 km/h from SEMostly CloudyMostly Cloudy
April 3049°F10°C65°F19°C5 mph8 km/h from SDrizzleMostly Cloudy
May 149°F10°C62°F16°C9 mph14 km/h from NWDrizzlePartly Cloudy
May 247°F9°C65°F19°C10 mph16 km/h from NMostly ClearMostly Cloudy

Yes

Low of 44°F7°C, High of 54°F12°C
Wind: 12 mph19 km/h
Precipitation: 59% rain

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