Yes

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

Why? Because it's not very warm out and it's so windy, your hat has officially retired from your head!
52°F11°C & Cloudy

Wind is 14 mph22 km/h from the Southeast, gusting to 22 mph35 km/h
September 27
2am53°F11°C15 mph24 km/h SoutheastCloudy
3am53°F12°C15 mph25 km/h SoutheastWindy
4am54°F12°C16 mph26 km/h SoutheastDrizzle
5am55°F13°C16 mph26 km/h SoutheastDrizzle
6am54°F12°C16 mph25 km/h SoutheastRain
7am54°F12°C16 mph25 km/h SoutheastRain
8am54°F12°C16 mph26 km/h SoutheastRain
9am54°F12°C16 mph26 km/h SoutheastRain
10am53°F12°C16 mph25 km/h SoutheastRain
11am53°F12°C15 mph24 km/h SoutheastRain
12pm53°F12°C14 mph22 km/h SoutheastRain
1pm53°F11°C9 mph15 km/h SoutheastRain
DateLowHighWindDayNight
September 2650°F10°C55°F13°C15 mph24 km/h from SoutheastRainRain
September 2748°F9°C56°F13°C5 mph8 km/h from SouthwestPartly CloudyPartly Cloudy
September 2844°F7°C56°F13°C9 mph15 km/h from SouthDrizzleDrizzle
September 2954°F12°C59°F15°C11 mph17 km/h from SouthDrizzleDrizzle
September 3057°F14°C59°F15°C17 mph28 km/h from SouthDrizzleRain
October 154°F12°C59°F15°C15 mph25 km/h from SouthRainRain
October 251°F10°C56°F13°C15 mph24 km/h from SouthwestDrizzleRain

Yes

Low of 47°F9°C, High of 55°F13°C
Wind: 5 mph8 km/h
Precipitation: 27% rain

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