Yes

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

Why? Because it's quite chilly.
47°F9°C & Partly Cloudy

Wind is 14 mph22 km/h from the SW, gusting to 18 mph29 km/h
March 28
4pm47°F9°C14 mph22 km/h SWPartly Cloudy
5pm47°F9°C13 mph21 km/h SWPartly Cloudy
6pm47°F8°C13 mph22 km/h SWPartly Cloudy
7pm47°F8°C14 mph22 km/h SWPartly Cloudy
8pm47°F8°C15 mph24 km/h SWMostly Cloudy
9pm47°F8°C16 mph26 km/h SWWindy
10pm47°F8°C17 mph27 km/h SWWindy
11pm47°F8°C18 mph29 km/h SWWindy
March 29
12am47°F8°C19 mph31 km/h SWWindy
1am47°F9°C21 mph33 km/h SWWindy
2am47°F9°C23 mph37 km/h SWWindy
3am48°F9°C24 mph39 km/h SWWindy
DateLowHighWindDayNight
March 2743°F6°C50°F10°C28 mph45 km/h from SWRainWindy
March 2847°F8°C51°F11°C24 mph38 km/h from SWWindyWindy
March 2947°F8°C51°F11°C18 mph28 km/h from SWindyDrizzle
March 3047°F9°C51°F11°C18 mph28 km/h from ERainRain
March 3147°F8°C52°F11°C14 mph23 km/h from WMostly CloudyPartly Cloudy
April 148°F9°C53°F11°C16 mph26 km/h from SRainDrizzle
April 249°F9°C51°F11°C27 mph44 km/h from WDrizzleWindy

Yes

Low of 46°F8°C, High of 51°F11°C
Wind: 24 mph38 km/h
Precipitation: 29% rain

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