Yes

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

Why? Because a little drizzle out and it's cool. Pleasantly cool, but cool!
56°F13°C & Drizzle

Wind is 4 mph6 km/h from the West, gusting to 6 mph9 km/h
July 2
12am56°F13°C4 mph6 km/h WestMostly Cloudy
1am57°F14°C5 mph8 km/h WestMostly Cloudy
2am58°F14°C6 mph10 km/h WestMostly Cloudy
3am59°F15°C8 mph14 km/h WestMostly Cloudy
4am60°F15°C10 mph15 km/h WestDrizzle
5am61°F16°C11 mph18 km/h WestDrizzle
6am61°F16°C13 mph21 km/h WestDrizzle
7am62°F17°C14 mph23 km/h WestPartly Cloudy
8am63°F17°C16 mph26 km/h NorthwestWindy
9am64°F18°C17 mph27 km/h NorthwestWindy
10am64°F18°C17 mph27 km/h NorthwestWindy
11am64°F18°C17 mph27 km/h NorthwestWindy
DateLowHighWindDayNight
July 154°F12°C64°F18°C14 mph22 km/h from NorthwestPartly CloudyMostly Clear
July 250°F10°C65°F18°C11 mph18 km/h from WestPartly CloudyDrizzle
July 355°F13°C66°F19°C14 mph23 km/h from SouthwestDrizzleDrizzle
July 458°F15°C66°F19°C14 mph22 km/h from WestDrizzleDrizzle
July 555°F13°C62°F17°C12 mph19 km/h from WestDrizzleMostly Cloudy
July 654°F12°C62°F17°C12 mph20 km/h from NorthwestDrizzleMostly Cloudy
July 753°F12°C64°F18°C9 mph14 km/h from WestThunderstormsMostly Clear

Yes

Low of 50°F10°C, High of 65°F19°C
Wind: 11 mph18 km/h
Precipitation: 22% rain

Support This Page