Yes

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

Why? Because it's not very warm out!
57°F14°C & Clear

Wind is 6 mph10 km/h from the West, gusting to 11 mph18 km/h
June 30
6am56°F14°C6 mph10 km/h WestClear
7am56°F13°C6 mph9 km/h WestClear
8am57°F14°C6 mph9 km/h WestClear
9am60°F16°C6 mph10 km/h WestClear
10am64°F18°C7 mph12 km/h WestClear
11am67°F20°C9 mph14 km/h WestClear
12pm71°F22°C10 mph16 km/h WestClear
1pm73°F23°C12 mph19 km/h WestClear
2pm75°F24°C14 mph22 km/h WestMostly Clear
3pm76°F24°C15 mph24 km/h WestMostly Clear
4pm77°F25°C16 mph25 km/h WestWindy
5pm78°F25°C16 mph26 km/h WestWindy
DateLowHighWindDayNight
June 3056°F13°C78°F26°C13 mph21 km/h from WestMostly ClearMostly Clear
July 155°F13°C79°F26°C3 mph5 km/h from NorthwestPartly CloudyMostly Clear
July 257°F14°C84°F29°C11 mph18 km/h from SoutheastClearPartly Cloudy
July 366°F19°C85°F29°C13 mph20 km/h from SouthwestMostly ClearMostly Clear
July 460°F15°C75°F24°C10 mph17 km/h from NorthwestMostly CloudyPartly Cloudy
July 555°F13°C77°F25°C10 mph15 km/h from NorthPartly CloudyDrizzle
July 655°F13°C73°F23°C7 mph11 km/h from NortheastDrizzleMostly Cloudy

Yes

Low of 55°F13°C, High of 80°F27°C
Wind: 3 mph5 km/h
Precipitation: None

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