Yes

you do need a jacket based on the weather in 1 Sunshine access Rd, Banff, AB T1L 1J5, Canada 1 second ago

Why? Because you're not freezing, but you’ll definitely start complaining if it lasts much longer!
45°F7°C & Cloudy

Wind is 2 mph3 km/h from the West, gusting to 6 mph9 km/h
September 15
7am45°F7°C2 mph4 km/h WestCloudy
8am45°F7°C2 mph4 km/h WestCloudy
9am45°F7°C2 mph3 km/h NorthwestCloudy
10am46°F8°C2 mph3 km/h NorthwestCloudy
11am47°F9°C2 mph4 km/h NorthCloudy
12pm49°F9°C3 mph4 km/h NorthCloudy
1pm51°F10°C3 mph4 km/h NortheastCloudy
2pm52°F11°C2 mph4 km/h NortheastCloudy
3pm54°F12°C2 mph4 km/h NortheastCloudy
4pm55°F13°C2 mph4 km/h EastMostly Cloudy
5pm56°F14°C2 mph4 km/h SoutheastMostly Cloudy
6pm57°F14°C2 mph3 km/h SoutheastMostly Cloudy
DateLowHighWindDayNight
September 1545°F7°C57°F14°C2 mph4 km/h from NortheastMostly CloudyPartly Cloudy
September 1643°F6°C65°F18°C3 mph5 km/h from SouthwestMostly ClearClear
September 1744°F7°C67°F19°C4 mph6 km/h from SouthwestClearClear
September 1845°F7°C66°F19°C3 mph4 km/h from SouthwestMostly ClearMostly Cloudy
September 1944°F7°C64°F18°C4 mph6 km/h from SouthwestPartly CloudyPartly Cloudy
September 2044°F7°C62°F17°C5 mph9 km/h from SouthwestMostly ClearPartly Cloudy
September 2140°F5°C51°F11°C9 mph15 km/h from WestPartly CloudyMostly Clear

Yes

Low of 43°F6°C, High of 64°F18°C
Wind: 3 mph5 km/h
Precipitation: None

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