Yes

you do need a jacket based on the weather in St Andrews KY16, UK 1 second ago

Why? Because it's not very warm out and it's so windy, even the squirrels are holding onto branches for dear life!
55°F13°C & Cloudy

Wind is 14 mph23 km/h from the Southwest, gusting to 24 mph38 km/h
July 3
10pm55°F13°C15 mph24 km/h SouthwestCloudy
11pm55°F13°C17 mph27 km/h SouthwestWindy
July 4
12am55°F13°C16 mph26 km/h SouthwestWindy
1am55°F13°C16 mph26 km/h SouthwestWindy
2am55°F13°C17 mph27 km/h SouthwestWindy
3am56°F14°C16 mph27 km/h SouthwestWindy
4am57°F14°C17 mph27 km/h SouthwestWindy
5am58°F14°C17 mph27 km/h SouthwestWindy
6am58°F15°C18 mph30 km/h SouthwestWindy
7am59°F15°C19 mph31 km/h SouthwestWindy
8am60°F16°C21 mph34 km/h SouthwestWindy
9am61°F16°C22 mph35 km/h SouthwestWindy
DateLowHighWindDayNight
July 355°F13°C62°F16°C20 mph33 km/h from SouthwestDrizzleDrizzle
July 456°F13°C64°F18°C19 mph31 km/h from SouthwestWindyMostly Cloudy
July 554°F12°C63°F17°C9 mph15 km/h from NorthwestDrizzleDrizzle
July 652°F11°C67°F19°C13 mph21 km/h from NorthwestPartly CloudyMostly Clear
July 750°F10°C68°F20°C9 mph15 km/h from WestPartly CloudyPartly Cloudy
July 856°F14°C69°F21°C14 mph23 km/h from WestMostly CloudyPartly Cloudy
July 958°F14°C69°F21°C10 mph17 km/h from SouthwestMostly CloudyPartly Cloudy

Yes

Low of 56°F14°C, High of 64°F18°C
Wind: 19 mph31 km/h
Precipitation: 14% rain

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