Yes

you do need a jacket based on the weather in Glasgow, Glasgow Metropolitan Area, UK 1 second ago

Why? Because it's windy enough to give you a brand new hairdo!
63°F17°C & Mostly Cloudy

Wind is 10 mph16 km/h from the West, gusting to 21 mph34 km/h
July 26
8am64°F18°C11 mph17 km/h WestPartly Cloudy
9am65°F18°C11 mph18 km/h WestPartly Cloudy
10am66°F19°C12 mph19 km/h WestPartly Cloudy
11am66°F19°C12 mph20 km/h WestPartly Cloudy
12pm65°F19°C12 mph19 km/h WestPartly Cloudy
1pm65°F18°C12 mph19 km/h WestMostly Clear
2pm63°F17°C12 mph19 km/h WestPartly Cloudy
3pm62°F17°C10 mph16 km/h WestMostly Cloudy
4pm60°F16°C9 mph15 km/h WestCloudy
5pm58°F15°C8 mph13 km/h WestCloudy
6pm57°F14°C8 mph13 km/h WestDrizzle
7pm56°F14°C7 mph12 km/h SouthwestCloudy
DateLowHighWindDayNight
July 2556°F14°C66°F19°C9 mph15 km/h from WestMostly CloudyDrizzle
July 2654°F12°C64°F18°C12 mph19 km/h from WestDrizzleMostly Clear
July 2752°F11°C66°F19°C10 mph16 km/h from WestMostly CloudyDrizzle
July 2853°F12°C66°F19°C4 mph7 km/h from WestDrizzleMostly Cloudy
July 2956°F14°C69°F21°C9 mph15 km/h from WestMostly CloudyDrizzle
July 3056°F13°C67°F19°C9 mph15 km/h from WestMostly CloudyDrizzle
July 3154°F12°C64°F18°C8 mph13 km/h from NorthwestDrizzleDrizzle

Yes

Low of 55°F13°C, High of 64°F18°C
Wind: 12 mph19 km/h
Precipitation: 53% rain

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