Yes

you do need a jacket based on the weather in Halifax Regional Municipality, NS, Canada 1 second ago

Why? Because it's bitterly cold.
45°F7°C & Partly Cloudy

Wind is 5 mph8 km/h from the W, gusting to 14 mph22 km/h
April 26
7pm42°F6°C4 mph6 km/h WMostly Clear
8pm40°F4°C4 mph7 km/h NWMostly Clear
9pm38°F3°C4 mph7 km/h NMostly Clear
10pm37°F3°C5 mph8 km/h NMostly Clear
11pm36°F2°C5 mph8 km/h NEClear
April 27
12am35°F2°C5 mph8 km/h NEMostly Clear
1am33°F1°C4 mph7 km/h NMostly Clear
2am32°F0°C4 mph7 km/h NClear
3am32°F-0°C4 mph7 km/h NClear
4am31°F-1°C4 mph7 km/h NClear
5am31°F-1°C5 mph7 km/h NMostly Clear
6am32°F0°C5 mph8 km/h NMostly Clear
DateLowHighWindDayNight
April 2531°F-1°C50°F10°C5 mph8 km/h from WPartly CloudyMostly Clear
April 2631°F-1°C53°F11°C8 mph13 km/h from NClearClear
April 2728°F-2°C58°F15°C6 mph9 km/h from NMostly ClearPartly Cloudy
April 2838°F3°C60°F16°C10 mph16 km/h from NMostly CloudyWindy
April 2936°F2°C54°F12°C15 mph24 km/h from NWindyMostly Cloudy
April 3033°F1°C52°F11°C11 mph18 km/h from NPartly CloudyPartly Cloudy
May 138°F3°C61°F16°C8 mph14 km/h from NWPartly CloudyPartly Cloudy

Yes

Low of 30°F-1°C, High of 53°F12°C
Wind: 8 mph13 km/h
Precipitation: None

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