Yes

you do need a jacket based on the weather in Constantine, Algeria 1 second ago

Why? Because it's pretty chilly.
54°F12°C & Mostly Clear

Wind is 7 mph12 km/h from the S, gusting to 18 mph29 km/h
March 28
9pm53°F12°C8 mph13 km/h SClear
10pm51°F10°C8 mph12 km/h SMostly Clear
11pm49°F9°C7 mph11 km/h SPartly Cloudy
March 29
12am48°F9°C6 mph10 km/h SMostly Cloudy
1am49°F9°C6 mph10 km/h SCloudy
2am50°F10°C6 mph10 km/h SCloudy
3am54°F12°C6 mph10 km/h SCloudy
4am59°F15°C8 mph12 km/h SCloudy
5am63°F17°C10 mph16 km/h SCloudy
6am66°F19°C12 mph19 km/h SCloudy
7am69°F21°C14 mph22 km/h SCloudy
8am72°F22°C15 mph24 km/h SMostly Cloudy
DateLowHighWindDayNight
March 2848°F9°C73°F23°C11 mph17 km/h from SMostly CloudyClear
March 2946°F8°C71°F21°C5 mph8 km/h from NWMostly ClearPartly Cloudy
March 3049°F10°C78°F25°C10 mph16 km/h from SMostly CloudyPartly Cloudy
March 3147°F9°C66°F19°C6 mph9 km/h from NWMostly CloudyMostly Cloudy
April 142°F6°C68°F20°C3 mph5 km/h from NPartly CloudyPartly Cloudy
April 249°F9°C70°F21°C7 mph11 km/h from NWPartly CloudyPartly Cloudy
April 344°F7°C72°F22°C4 mph7 km/h from NEMostly ClearClear

Yes

Low of 46°F8°C, High of 71°F22°C
Wind: 5 mph8 km/h
Precipitation: None

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