Yes

you do need a jacket based on the weather in Paris, France 18 minutes ago

Why? Because it's cold. simple as that.
40°F5°C & Mostly Clear

Wind is 2 mph4 km/h from the NW, gusting to 7 mph11 km/h
April 24
7pm40°F4°C3 mph4 km/h WMostly Clear
8pm38°F4°C3 mph4 km/h WMostly Clear
9pm37°F3°C3 mph4 km/h WMostly Clear
10pm36°F2°C3 mph4 km/h WMostly Clear
11pm35°F2°C2 mph4 km/h WMostly Clear
April 25
12am35°F2°C2 mph3 km/h SWMostly Clear
1am35°F2°C2 mph3 km/h SWPartly Cloudy
2am36°F2°C2 mph3 km/h SWPartly Cloudy
3am41°F5°C2 mph4 km/h SMostly Clear
4am45°F7°C3 mph6 km/h SMostly Clear
5am48°F9°C5 mph8 km/h SPartly Cloudy
6am50°F10°C5 mph9 km/h SWMostly Cloudy
DateLowHighWindDayNight
April 2435°F2°C56°F13°C5 mph8 km/h from SWMostly CloudyMostly Cloudy
April 2542°F5°C60°F15°C6 mph10 km/h from SDrizzleDrizzle
April 2647°F8°C61°F16°C9 mph14 km/h from SERainRain
April 2748°F9°C64°F18°C14 mph23 km/h from SWMostly CloudyMostly Cloudy
April 2846°F8°C63°F17°C5 mph8 km/h from SDrizzleDrizzle
April 2951°F11°C67°F20°C7 mph11 km/h from SECloudyDrizzle
April 3053°F12°C71°F22°C5 mph8 km/h from ERainRain

Yes

Low of 42°F6°C, High of 60°F16°C
Wind: 6 mph10 km/h
Precipitation: 38% rain

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