Yes

you do need a jacket based on the weather in Chepstow NP16, UK 1 second ago

Why? Because a jacket will keep you cozy, but you won't break a seat and it's really really huffing out there!
58°F14°C & Windy

Wind is 17 mph28 km/h from the Southwest, gusting to 33 mph53 km/h
May 24
9pm57°F14°C17 mph27 km/h SouthwestWindy
10pm56°F14°C16 mph26 km/h SouthwestWindy
11pm56°F13°C17 mph28 km/h SouthwestWindy
May 25
12am56°F13°C16 mph27 km/h WestWindy
1am56°F13°C14 mph23 km/h WestMostly Cloudy
2am56°F13°C14 mph22 km/h WestMostly Cloudy
3am56°F13°C14 mph23 km/h WestMostly Clear
4am57°F14°C15 mph24 km/h WestPartly Cloudy
5am58°F15°C15 mph24 km/h WestPartly Cloudy
6am60°F15°C15 mph24 km/h WestWindy
7am61°F16°C16 mph26 km/h WestWindy
8am62°F17°C17 mph28 km/h WestWindy
DateLowHighWindDayNight
May 2452°F11°C62°F17°C17 mph27 km/h from WestWindyPartly Cloudy
May 2550°F10°C62°F17°C16 mph26 km/h from SouthwestDrizzleDrizzle
May 2654°F12°C62°F17°C15 mph24 km/h from SouthwestRainRain
May 2753°F12°C65°F18°C17 mph27 km/h from WestDrizzleRain
May 2852°F11°C66°F19°C17 mph27 km/h from WestDrizzleMostly Cloudy
May 2955°F13°C67°F19°C9 mph14 km/h from SouthwestMostly CloudyPartly Cloudy
May 3053°F12°C71°F22°C10 mph16 km/h from SouthwestPartly CloudyPartly Cloudy

Yes

Low of 50°F10°C, High of 62°F17°C
Wind: 16 mph26 km/h
Precipitation: 36% rain

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