Yes

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

Why? Because it's quite chilly and it's so windy, even the squirrels are holding onto branches for dear life!
40°F4°C & Mostly Cloudy

Wind is 9 mph14 km/h from the West, gusting to 19 mph31 km/h
November 29
5pm40°F4°C9 mph15 km/h WestPartly Cloudy
6pm39°F4°C8 mph13 km/h WestPartly Cloudy
7pm38°F3°C8 mph12 km/h WestMostly Cloudy
8pm38°F3°C8 mph13 km/h SouthwestMostly Cloudy
9pm38°F3°C8 mph14 km/h SouthwestMostly Cloudy
10pm38°F3°C9 mph14 km/h SouthwestMostly Cloudy
11pm37°F3°C8 mph12 km/h SouthwestMostly Cloudy
November 30
12am37°F3°C7 mph12 km/h SouthwestMostly Cloudy
1am36°F2°C7 mph11 km/h SouthwestPartly Cloudy
2am35°F2°C5 mph8 km/h SouthwestMostly Clear
3am34°F1°C4 mph6 km/h SouthwestMostly Clear
4am34°F1°C3 mph4 km/h WestPartly Cloudy
DateLowHighWindDayNight
November 2837°F3°C49°F10°C15 mph24 km/h from WestWindyPartly Cloudy
November 2932°F-0°C43°F6°C6 mph9 km/h from SouthwestDrizzleMostly Clear
November 3029°F-2°C40°F5°C7 mph12 km/h from SouthwestMostly ClearMostly Clear
December 129°F-2°C39°F4°C5 mph7 km/h from WestPartly CloudyPartly Cloudy
December 226°F-3°C34°F1°C8 mph12 km/h from NorthwestPartly CloudyPartly Cloudy
December 325°F-4°C33°F1°C6 mph10 km/h from WestPartly CloudyMostly Cloudy
December 425°F-4°C38°F3°C12 mph20 km/h from SouthRainHeavy Snow

Yes

Low of 32°F-0°C, High of 43°F6°C
Wind: 6 mph9 km/h
Precipitation: 33% rain

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