Yes

you do need a jacket based on the weather in Balerno, UK 1 second ago

Why? Because it's cool. Pleasantly cool, but cool and the wind makes walking forward feel like moonwalking in reverse!
55°F13°C & Windy

Wind is 16 mph26 km/h from the Southwest, gusting to 30 mph48 km/h
September 11
6am55°F13°C16 mph27 km/h SouthwestWindy
7am56°F13°C16 mph26 km/h SouthwestWindy
8am57°F14°C16 mph25 km/h SouthwestWindy
9am58°F14°C15 mph25 km/h SouthwestWindy
10am58°F14°C15 mph24 km/h SouthwestWindy
11am57°F14°C15 mph24 km/h SouthwestDrizzle
12pm56°F13°C14 mph23 km/h SouthwestMostly Cloudy
1pm54°F12°C14 mph22 km/h SouthwestMostly Cloudy
2pm53°F12°C14 mph22 km/h SouthwestPartly Cloudy
3pm51°F11°C13 mph21 km/h SouthwestPartly Cloudy
4pm50°F10°C13 mph20 km/h SouthwestPartly Cloudy
5pm50°F10°C12 mph20 km/h SouthwestPartly Cloudy
DateLowHighWindDayNight
September 1049°F10°C58°F15°C16 mph25 km/h from SouthwestDrizzleDrizzle
September 1149°F9°C58°F14°C15 mph25 km/h from SouthwestDrizzleRain
September 1248°F9°C57°F14°C13 mph21 km/h from SouthwestDrizzleDrizzle
September 1348°F9°C58°F14°C10 mph16 km/h from SoutheastDrizzleRain
September 1452°F11°C59°F15°C12 mph20 km/h from WestDrizzleDrizzle
September 1549°F10°C58°F15°C14 mph22 km/h from WestPartly CloudyMostly Cloudy
September 1647°F8°C58°F14°C14 mph22 km/h from WestRainDrizzle

Yes

Low of 49°F10°C, High of 58°F15°C
Wind: 15 mph25 km/h
Precipitation: 46% rain

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